I believe you get everything updated, except Repeater Regions.
Or that might have been fixed, since Lax didn't mention it in his post, but he had mentioned this previously.


Katsurahama:
Since you've got five slots to work with, and five accounts to work with...
If you set it up, so Slot 1 is always Account 1, and Slot 2 is always Account 2, etc...
Then it will work for you too.

With instant swap between regions/slots, it doesn't matter what order they're loaded.
Mapped Keys, send the desired key to whatever slot/character/group, etc.