Kmymoney UI can store payee information except for the payee city and state. The ability to add and modify the payee city and state needs to be added.
They are, this patch just provides the ability to save this data into the existing database using existing variables. This variables are the ones that are used in the print checks plugin.
This is why this patch is needed, since without this patch the payee's City State (or what ever the localities that are used) cannot be saved.