TOPIC: Migrating KDE Apps from YDL v4.0 to YDL v4.1

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Introduction
In moving from YDL v4.0 to YDL v4.1, it is sometimes the case that if you preserve all application settings (ie: mmigrate your entire home directory, in tact) when upgrading that the application will not function as it should. I have personally witnessed, for instance, that KMail no longer alphabetized my mailboxes appropriately. And yes, when I migrated only the Mail itself, and reset my preferences, then it functioned as it should.


2 Methods of Migration
Therefore, it is sometimes best to migrate the data and then reset the permissions. Therefore I offer the following as examples of where to find the data that needs to be migrated from the old user account to the new. As such, there are 2 means by which you may preserve the old user account:

• a) tar -czvf [user].tar.gz /home/[user]/ [ENTER]; b) archive it to a backup drive; c) reformat and install YDL; d) add a new user with a different name; e) return the tarball to the newly installed YDL /home dir; f) tar -xzvf [user].tar.gz [ENTER]; g) copy required data from the old user account to the new; h) launch the apps and reset the desired preferences.
  
  ... or ...
• a) maintain a /home directory that is unique from the / directory of the filesystem such that you can reformat and install a new OS w/out destroying the /home directory; b) rename the old user account to [user].old; c) add a new user of the original name; d) copy required data from the old user account to the new; e) launch the apps and reset the desired preferences.

Data Migration Examples

KAddressbook
/home/[user]/.kde/share/apps/kabc

KMail
/home/[user]/.kde/share/apps/kmail

KMail filters
/home/[user]/.kde/share/config/kmailrc

KNotes
/home/[user]/.kde/share/apps/knotes /home/[user]/.kde/share/config/knotesrc

Mozilla/FireFox
/home/[user]/.mozilla/firefox/[random-number.default]/bookmarks.html

Again, these are just examples. A little exploration of your home directory, tinkering with the files (ie: make a change in the preferences and then look to see which file has the associated modification time stamp), and some patience will enable you to make this transition as smmooth as possible.