diff --git a/libs/ui/KisPaletteEditor.cpp b/libs/ui/KisPaletteEditor.cpp
index 61a0942201..fe64041f3c 100644
--- a/libs/ui/KisPaletteEditor.cpp
+++ b/libs/ui/KisPaletteEditor.cpp
@@ -1,644 +1,631 @@
 /*
  *  Copyright (c) 2018 Michael Zhou <simeirxh@gmail.com>
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
  *  the Free Software Foundation; either version 2 of the License, or
  *  (at your option) any later version.
  *
  *  This program is distributed in the hope that it will be useful,
  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  *  GNU General Public License for more details.
  *
  *  You should have received a copy of the GNU General Public License
  *  along with this program; if not, write to the Free Software
  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  */
 
 #include <QHash>
 #include <QString>
 #include <QScopedPointer>
 #include <QPointer>
 #include <QFormLayout>
 #include <QCheckBox>
 #include <QLineEdit>
 #include <QPushButton>
 #include <QLabel>
 #include <QSpinBox>
 #include <QComboBox>
 #include <QMessageBox>
 
 #include <KoDialog.h>
 #include <KoFileDialog.h>
 #include <KoColorSet.h>
 #include <KisSwatchGroup.h>
 #include <kis_signal_compressor.h>
 #include <KisViewManager.h>
 #include <KisDocument.h>
 #include <KoResourceServer.h>
 #include <KoResourceServerProvider.h>
 #include <KisPaletteModel.h>
 #include <kis_color_button.h>
 
 #include "KisPaletteEditor.h"
 
 struct KisPaletteEditor::PaletteInfo {
     QString name;
     QString filename;
     int columnCount;
     bool isGlobal;
     bool isReadOnly;
     QHash<QString, KisSwatchGroup> groups;
 };
 
 struct KisPaletteEditor::Private
 {
     bool isGlobalModified {false};
     bool isNameModified {false};
     bool isFilenameModified {false};
     bool isColumnCountModified {false};
     QSet<QString> modifiedGroupNames; // key is original group name
     QSet<QString> newGroupNames;
     QSet<QString> keepColorGroups;
     QSet<QString> pathsToRemove;
     QString groupBeingRenamed;
     QPointer<KisPaletteModel> model;
     QPointer<KisViewManager> view;
     PaletteInfo modified;
     QPointer<KoDialog> query;
     KoResourceServer<KoColorSet> *rServer {0};
 
     QPalette normalPalette;
     QPalette warnPalette;
 };
 
 KisPaletteEditor::KisPaletteEditor(QObject *parent)
     : QObject(parent)
     , m_d(new Private)
 {
     m_d->rServer = KoResourceServerProvider::instance()->paletteServer();
     m_d->warnPalette.setColor(QPalette::Text, Qt::red);
 }
 
 KisPaletteEditor::~KisPaletteEditor()
 { }
 
 void KisPaletteEditor::setPaletteModel(KisPaletteModel *model)
 {
     if (!model) { return; }
     m_d->model = model;
     slotPaletteChanged();
     connect(model, SIGNAL(sigPaletteChanged()), SLOT(slotPaletteChanged()));
     connect(model, SIGNAL(sigPaletteModified()), SLOT(slotSetDocumentModified()));
 }
 
 void KisPaletteEditor::setView(KisViewManager *view)
 {
     m_d->view = view;
 }
 
 void KisPaletteEditor::addPalette()
 {
     if (!m_d->view) { return; }
     if (!m_d->view->document()) { return; }
 
     KoColorSetSP colorSet(new KoColorSet());
 
     KoDialog dlg;
     QFormLayout layout;
     dlg.mainWidget()->setLayout(&layout);
     QLabel lbl(i18nc("Label for line edit to set a palette name.","Name"));
     QLineEdit le(i18nc("Default name for a new palette","New Palette"));
     layout.addRow(&lbl, &le);
 
     QLabel lbl2(i18nc("Label for line edit to set a palette filename.","File Name"));
     QLineEdit fileNameEdit(i18nc("Default file name for a new palette", "New Palette"));
     layout.addRow(&lbl2, &fileNameEdit);
 
     QString saveLocation = m_d->rServer->saveLocation();
 
 
     QCheckBox chkSaveInDocument(i18n("Save Palette in the Current Document"));
     chkSaveInDocument.setChecked(false);
     layout.addRow(&chkSaveInDocument);
 
     if (dlg.exec() != QDialog::Accepted) { return; }
 
     QString name = fileNameEdit.text();
     if (name.isEmpty()) {
         name = le.text();
     }
     colorSet->setPaletteType(KoColorSet::KPL);
     colorSet->setIsGlobal(!chkSaveInDocument.isChecked());
     colorSet->setIsEditable(true);
     colorSet->setValid(true);
     colorSet->setName(le.text());
     colorSet->setFilename(name.split(" ").join("_")+colorSet->defaultFileExtension());
 
     m_d->rServer->addResource(colorSet, !chkSaveInDocument.isChecked());
     uploadPaletteList();
 }
 
 void KisPaletteEditor::importPalette()
 {
     KoFileDialog dialog(0, KoFileDialog::OpenFile, "Open Palette");
 
     dialog.setDefaultDir(QDir::homePath());
     dialog.setMimeTypeFilters(QStringList() << "krita/x-colorset" << "application/x-gimp-color-palette");
 
     QString filename = dialog.filename();
     if (filename.isEmpty()) { return; }
-    if (duplicateExistsFilename(filename, false)) {
-        QMessageBox message;
-        message.setWindowTitle(i18n("Can't Import Palette"));
-        message.setText(i18n("Can't import palette: there's already imported with the same filename"));
-        message.exec();
-        return;
-    }
 
     QMessageBox messageBox;
     messageBox.setText(i18n("Do you want to store this palette in your current image?"));
     messageBox.setStandardButtons(QMessageBox::Yes | QMessageBox::No);
     bool global = (messageBox.exec() == QMessageBox::Yes);
 
     KoColorSetSP colorSet(new KoColorSet(filename));
 
     colorSet->load();
     QString name = filenameFromPath(colorSet->filename());
 
     colorSet->setIsGlobal(global);
     m_d->rServer->addResource(colorSet, global);
     //m_d->rServer->removeFromBlacklist(colorSet);
 
     uploadPaletteList();
 }
 
 void KisPaletteEditor::removePalette(KoColorSetSP cs)
 {
     if (!m_d->view) { return; }
     if (!m_d->view->document()) { return; }
     if (!cs || !cs->isEditable()) {
         return;
     }
     m_d->rServer->removeResourceFromServer(cs);
     uploadPaletteList();
 }
 
 int KisPaletteEditor::rowNumberOfGroup(const QString &oriName) const
 {
     if (!m_d->modified.groups.contains(oriName)) { return 0; }
     return m_d->modified.groups[oriName].rowCount();
 }
 
 bool KisPaletteEditor::duplicateExistsGroupName(const QString &name) const
 {
     if (name == m_d->groupBeingRenamed) { return false; }
     Q_FOREACH (const KisSwatchGroup &g, m_d->modified.groups.values()) {
         if (name == g.name()) { return true; }
     }
     return false;
 }
 
 bool KisPaletteEditor::duplicateExistsOriginalGroupName(const QString &name) const
 {
     return m_d->modified.groups.contains(name);
 }
 
 QString KisPaletteEditor::oldNameFromNewName(const QString &newName) const
 {
     Q_FOREACH (const QString &oldGroupName, m_d->modified.groups.keys()) {
         if (m_d->modified.groups[oldGroupName].name() == newName) {
             return oldGroupName;
         }
     }
     return QString();
 }
 
 void KisPaletteEditor::rename(const QString &newName)
 {
     if (newName.isEmpty()) { return; }
     m_d->isNameModified = true;
     m_d->modified.name = newName;
 }
 
 void KisPaletteEditor::changeFilename(const QString &newName)
 {
     if (newName.isEmpty()) { return; }
     m_d->isFilenameModified = true;
     m_d->pathsToRemove.insert(m_d->modified.filename);
     m_d->modified.filename = newName;
 }
 
 void KisPaletteEditor::changeColCount(int newCount)
 {
     m_d->isColumnCountModified = true;
     m_d->modified.columnCount = newCount;
 }
 
 QString KisPaletteEditor::addGroup()
 {
     KoDialog dlg;
     m_d->query = &dlg;
 
     QVBoxLayout layout(&dlg);
     dlg.mainWidget()->setLayout(&layout);
 
     QLabel lblName(i18n("Name"), &dlg);
     layout.addWidget(&lblName);
     QLineEdit leName(&dlg);
     leName.setText(newGroupName());
     connect(&leName, SIGNAL(textChanged(QString)), SLOT(slotGroupNameChanged(QString)));
     layout.addWidget(&leName);
     QLabel lblRowCount(i18n("Row count"), &dlg);
     layout.addWidget(&lblRowCount);
     QSpinBox spxRow(&dlg);
     spxRow.setValue(20);
     layout.addWidget(&spxRow);
 
     if (dlg.exec() != QDialog::Accepted) { return QString(); }
     if (duplicateExistsGroupName(leName.text())) { return QString(); }
 
     QString realName = leName.text();
     QString name = realName;
     if (duplicateExistsOriginalGroupName(name)) {
         name = newGroupName();
     }
     m_d->modified.groups[name] = KisSwatchGroup();
     KisSwatchGroup &newGroup = m_d->modified.groups[name];
     newGroup.setName(realName);
     m_d->newGroupNames.insert(name);
     newGroup.setRowCount(spxRow.value());
     return realName;
 }
 
 bool KisPaletteEditor::removeGroup(const QString &name)
 {
     KoDialog window;
     window.setWindowTitle(i18nc("@title:window", "Removing Group"));
     QFormLayout editableItems(&window);
     QCheckBox chkKeep(&window);
     window.mainWidget()->setLayout(&editableItems);
     editableItems.addRow(i18nc("Shows up when deleting a swatch group", "Keep the Colors"), &chkKeep);
     if (window.exec() != KoDialog::Accepted) { return false; }
 
     m_d->modified.groups.remove(name);
     m_d->newGroupNames.remove(name);
     if (chkKeep.isChecked()) {
         m_d->keepColorGroups.insert(name);
     }
     return true;
 }
 
 QString KisPaletteEditor::renameGroup(const QString &oldName)
 {
     if (oldName.isEmpty() || oldName == KoColorSet::GLOBAL_GROUP_NAME) { return QString(); }
 
     KoDialog dlg;
     m_d->query = &dlg;
     m_d->groupBeingRenamed = m_d->modified.groups[oldName].name();
 
     QFormLayout form(&dlg);
     dlg.mainWidget()->setLayout(&form);
 
     QLineEdit leNewName;
     connect(&leNewName, SIGNAL(textChanged(QString)), SLOT(slotGroupNameChanged(QString)));
     leNewName.setText(m_d->modified.groups[oldName].name());
 
     form.addRow(i18nc("Renaming swatch group", "New name"), &leNewName);
 
     if (dlg.exec() != KoDialog::Accepted) { return QString(); }
     if (leNewName.text().isEmpty()) { return QString(); }
     if (duplicateExistsGroupName(leNewName.text())) { return QString(); }
 
     m_d->modified.groups[oldName].setName(leNewName.text());
     m_d->modifiedGroupNames.insert(oldName);
 
     return leNewName.text();
 }
 
 void KisPaletteEditor::slotGroupNameChanged(const QString &newName)
 {
     QLineEdit *leGroupName = qobject_cast<QLineEdit*>(sender());
     if (duplicateExistsGroupName(newName) || newName == QString()) {
         leGroupName->setPalette(m_d->warnPalette);
         if (m_d->query->button(KoDialog::Ok)) {
             m_d->query->button(KoDialog::Ok)->setEnabled(false);
         }
         return;
     }
     leGroupName->setPalette(m_d->normalPalette);
     if (m_d->query->button(KoDialog::Ok)) {
         m_d->query->button(KoDialog::Ok)->setEnabled(true);
     }
 }
 
 void KisPaletteEditor::changeGroupRowCount(const QString &name, int newRowCount)
 {
     if (!m_d->modified.groups.contains(name)) { return; }
     m_d->modified.groups[name].setRowCount(newRowCount);
     m_d->modifiedGroupNames.insert(name);
 }
 
 void KisPaletteEditor::setGlobal(bool isGlobal)
 {
     m_d->isGlobalModified = true;
     m_d->modified.isGlobal = isGlobal;
 }
 
 void KisPaletteEditor::setEntry(const KoColor &color, const QModelIndex &index)
 {
     Q_ASSERT(m_d->model);
     if (!m_d->model->colorSet()->isEditable()) { return; }
     if (!m_d->view) { return; }
     if (!m_d->view->document()) { return; }
     KisSwatch c = KisSwatch(color);
     c.setId(QString::number(m_d->model->colorSet()->colorCount() + 1));
     c.setName(i18nc("Default name for a color swatch","Color %1", QString::number(m_d->model->colorSet()->colorCount()+1)));
     m_d->model->setEntry(c, index);
 }
 
 void KisPaletteEditor::slotSetDocumentModified()
 {
     m_d->view->document()->setModified(true);
 }
 
 void KisPaletteEditor::removeEntry(const QModelIndex &index)
 {
     Q_ASSERT(m_d->model);
     if (!m_d->model->colorSet()->isEditable()) { return; }
     if (!m_d->view) { return; }
     if (!m_d->view->document()) { return; }
     if (qvariant_cast<bool>(index.data(KisPaletteModel::IsGroupNameRole))) {
         removeGroup(qvariant_cast<QString>(index.data(KisPaletteModel::GroupNameRole)));
         updatePalette();
     } else {
         m_d->model->removeEntry(index, false);
     }
     if (m_d->model->colorSet()->isGlobal()) {
         m_d->model->colorSet()->save();
         return;
     }
 }
 
 void KisPaletteEditor::modifyEntry(const QModelIndex &index)
 {
     if (!m_d->model->colorSet()->isEditable()) { return; }
     if (!m_d->view) { return; }
     if (!m_d->view->document()) { return; }
 
     KoDialog dlg;
     dlg.setCaption(i18nc("@title:window", "Add a Color"));
     QFormLayout *editableItems = new QFormLayout(&dlg);
     dlg.mainWidget()->setLayout(editableItems);
 
     QString groupName = qvariant_cast<QString>(index.data(Qt::DisplayRole));
     if (qvariant_cast<bool>(index.data(KisPaletteModel::IsGroupNameRole))) {
         renameGroup(groupName);
         updatePalette();
     }
     else {
 
         QLineEdit *lnIDName = new QLineEdit(&dlg);
         QLineEdit *lnGroupName = new QLineEdit(&dlg);
         KisColorButton *bnColor = new KisColorButton(&dlg);
         QCheckBox *chkSpot = new QCheckBox(&dlg);
         chkSpot->setToolTip(i18nc("@info:tooltip", "A spot color is a color that the printer is able to print without mixing the paints it has available to it. The opposite is called a process color."));
 
         KisSwatch entry = m_d->model->getEntry(index);
 
         editableItems->addRow(i18n("ID"), lnIDName);
         editableItems->addRow(i18nc("Name for a swatch group", "Swatch group name"), lnGroupName);
         editableItems->addRow(i18n("Color"), bnColor);
         editableItems->addRow(i18n("Spot color"), chkSpot);
 
         lnGroupName->setText(entry.name());
         lnIDName->setText(entry.id());
         bnColor->setColor(entry.color());
         chkSpot->setChecked(entry.spotColor());
 
         if (dlg.exec() == KoDialog::Accepted) {
             entry.setName(lnGroupName->text());
             entry.setId(lnIDName->text());
             entry.setColor(bnColor->color());
             entry.setSpotColor(chkSpot->isChecked());
             m_d->model->setEntry(entry, index);
         }
     }
 }
 
 void KisPaletteEditor::addEntry(const KoColor &color)
 {
     Q_ASSERT(m_d->model);
     if (!m_d->view) { return; }
     if (!m_d->view->document()) { return; }
     if (!m_d->model->colorSet()->isEditable()) { return; }
     KoDialog window;
     window.setWindowTitle(i18nc("@title:window", "Add a new Colorset Entry"));
     QFormLayout editableItems(&window);
     window.mainWidget()->setLayout(&editableItems);
     QComboBox cmbGroups(&window);
     cmbGroups.addItems(m_d->model->colorSet()->getGroupNames());
     QLineEdit lnIDName(&window);
     QLineEdit lnName(&window);
     KisColorButton bnColor(&window);
     QCheckBox chkSpot(&window);
     chkSpot.setToolTip(i18nc("@info:tooltip", "A spot color is a color that the printer is able to print without mixing the paints it has available to it. The opposite is called a process color."));
     editableItems.addRow(i18n("Group"), &cmbGroups);
     editableItems.addRow(i18n("ID"), &lnIDName);
     editableItems.addRow(i18n("Name"), &lnName);
     editableItems.addRow(i18n("Color"), &bnColor);
     editableItems.addRow(i18nc("Spot color", "Spot"), &chkSpot);
     cmbGroups.setCurrentIndex(0);
     lnName.setText(i18nc("Default name for a color swatch","Color %1", QString::number(m_d->model->colorSet()->colorCount()+1)));
     lnIDName.setText(QString::number(m_d->model->colorSet()->colorCount() + 1));
     bnColor.setColor(color);
     chkSpot.setChecked(false);
 
     if (window.exec() != KoDialog::Accepted) { return; }
 
     QString groupName = cmbGroups.currentText();
 
     KisSwatch newEntry;
     newEntry.setColor(bnColor.color());
     newEntry.setName(lnName.text());
     newEntry.setId(lnIDName.text());
     newEntry.setSpotColor(chkSpot.isChecked());
     m_d->model->addEntry(newEntry, groupName);
 
     if (m_d->model->colorSet()->isGlobal()) {
         m_d->model->colorSet()->save();
         return;
     }
     m_d->modifiedGroupNames.insert(groupName);
     m_d->modified.groups[groupName].addEntry(newEntry);
 }
 
 void KisPaletteEditor::updatePalette()
 {
     Q_ASSERT(m_d->model);
     Q_ASSERT(m_d->model->colorSet());
     if (!m_d->model->colorSet()->isEditable()) { return; }
     if (!m_d->view) { return; }
     if (!m_d->view->document()) { return; }
     KoColorSetSP palette = m_d->model->colorSet();
     PaletteInfo &modified = m_d->modified;
 
     if (m_d->isColumnCountModified) {
         palette->setColumnCount(modified.columnCount);
     }
     if (m_d->isNameModified) {
         palette->setName(modified.name);
     }
     if (m_d->isFilenameModified) {
         palette->setFilename(modified.filename);
         palette->save();
     }
     if (m_d->isGlobalModified) {
         palette->setIsGlobal(modified.isGlobal);
         if (modified.isGlobal) {
             setGlobal();
         } else {
             setNonGlobal();
         }
     }
     Q_FOREACH (const QString &groupName, palette->getGroupNames()) {
         if (!modified.groups.contains(groupName)) {
             m_d->model->removeGroup(groupName, m_d->keepColorGroups.contains(groupName));
         }
     }
     m_d->keepColorGroups.clear();
     Q_FOREACH (const QString &groupName, palette->getGroupNames()) {
         if (m_d->modifiedGroupNames.contains(groupName)) {
             m_d->model->setRowNumber(groupName, modified.groups[groupName].rowCount());
             if (groupName != modified.groups[groupName].name()) {
                 m_d->model->renameGroup(groupName, modified.groups[groupName].name());
                 modified.groups[modified.groups[groupName].name()] = modified.groups[groupName];
                 modified.groups.remove(groupName);
             }
         }
     }
     m_d->modifiedGroupNames.clear();
     Q_FOREACH (const QString &newGroupName, m_d->newGroupNames) {
         m_d->model->addGroup(modified.groups[newGroupName]);
     }
     m_d->newGroupNames.clear();
 
     if (m_d->model->colorSet()->isGlobal()) {
         m_d->model->colorSet()->save();
     }
 }
 
 void KisPaletteEditor::slotPaletteChanged()
 {
     Q_ASSERT(m_d->model);
     if (!m_d->model->colorSet()) { return; }
     KoColorSetSP palette = m_d->model->colorSet();
     m_d->modified.groups.clear();
     m_d->keepColorGroups.clear();
     m_d->newGroupNames.clear();
     m_d->modifiedGroupNames.clear();
 
     m_d->modified.name = palette->name();
     m_d->modified.filename = palette->filename();
     m_d->modified.columnCount = palette->columnCount();
     m_d->modified.isGlobal = palette->isGlobal();
     m_d->modified.isReadOnly = !palette->isEditable();
 
     Q_FOREACH (const QString &groupName, palette->getGroupNames()) {
         KisSwatchGroup *cs = palette->getGroup(groupName);
         m_d->modified.groups[groupName] = KisSwatchGroup(*cs);
     }
 }
 
 void KisPaletteEditor::setGlobal()
 {
     //this all needs to be rewritten to switch to saving in documentstorage to saving in folder storage...
     Q_ASSERT(m_d->model);
     if (!m_d->view) { return; }
     if (!m_d->view->document()) { return; }
     if (!m_d->model->colorSet()) { return; }
 
     KoColorSetSP colorSet = m_d->model->colorSet();
     QString saveLocation = m_d->rServer->saveLocation();
     QString name = filenameFromPath(colorSet->filename());
 
     QFileInfo fileInfo(saveLocation + name);
 
     colorSet->setFilename(fileInfo.filePath());
     colorSet->setIsGlobal(true);
     //m_d->rServer->removeFromBlacklist(colorSet);
     if (!colorSet->save()) {
         QMessageBox message;
         message.setWindowTitle(i18n("Saving palette failed"));
         message.setText(i18n("Failed to save global palette file. Please set it to non-global, or you will lose the file when you close Krita"));
         message.exec();
     }
 
     uploadPaletteList();
 }
 
 bool KisPaletteEditor::duplicateExistsFilename(const QString &filename, bool global) const
 {
     QString prefix;
     if (global) {
         prefix = m_d->rServer->saveLocation();
     }
 
-    Q_FOREACH (const KoResourceSP r, KoResourceServerProvider::instance()->paletteServer()->resources()) {
-        if (r->filename() == prefix + filename && r != m_d->model->colorSet()) {
-            return true;
-        }
-    }
-
-    return false;
+    return QFileInfo(prefix+filename).exists();
 }
 
 QString KisPaletteEditor::relativePathFromSaveLocation() const
 {
     return filenameFromPath(m_d->modified.filename);
 }
 
 void KisPaletteEditor::setNonGlobal()
 {
     Q_ASSERT(m_d->model);
     if (!m_d->view) { return; }
     if (!m_d->view->document()) { return; }
     if (!m_d->model->colorSet()) { return; }
 
     KoColorSetSP colorSet = m_d->model->colorSet();
     colorSet->setIsGlobal(false);
 
     //we need to swithc this to saving in global to saving in the document.
 
     uploadPaletteList();
 }
 
 QString KisPaletteEditor::newGroupName() const
 {
     int i = 1;
     QString groupname = i18nc("Default new group name", "New Group %1", QString::number(i));
     while (m_d->modified.groups.contains(groupname)) {
         i++;
         groupname = i18nc("Default new group name", "New Group %1", QString::number(i));
     }
     return groupname;
 }
 
 void KisPaletteEditor::uploadPaletteList() const
 {
     QList<KoColorSetSP > list;
     Q_FOREACH (KoResourceSP paletteResource, m_d->rServer->resources()) {
         KoColorSetSP palette = paletteResource.staticCast<KoColorSet>();
         Q_ASSERT(palette);
         if (!palette->isGlobal()) {
             list.append(palette);
         }
     }
     m_d->view->document()->setPaletteList(list);
 }
 
 QString KisPaletteEditor::filenameFromPath(const QString &path) const
 {
     return QDir::fromNativeSeparators(path).section('/', -1, -1);
 }