The game's action bars give a character a unique set of action bars for each class. With class expansion tickets, each class has FIVE possible secondary classes. When switching secondaries, there are elite skills that can impact certain skills so they no longer work unless you delete them from the action bar and reset them. Other skills are even possible on the new class combination.
The extended bar add-on gives the character a unique set of extended bars for each class COMBO. I tried today to move hotkeys in the top keyboard row (1 though =) to the EAB so I could permanently reorganize the action bars to be correct with every class combo. I don't know whether it was the game or the add-on that stopped me from doing that.
If an add-on can give me unique bars for every class combo, then why can't Runewaker? Also, if whoever is the author of Extended Action Bars, maybe you can change the add-on.
Either solution would be acceptable.