You know, it is still far easier to just move the abilities around on the bar to match your old positions, they get the settings to save. The location of the Action Bar really is irrelevant. You re-organize the abilities like the directional arrows once per character, and then you don’t care what bar it technically is located on.
As for having tried all the work-arounds to get your settings to save, I’m sorry to say it here, but that is almost certainly user-error for not getting it to work. Regardless, Funcom really should fix that bug so it doesn’t mess people up so much that they want whole UI’s altered instead of changing keybindings.
Maybe I or someone else will take some time to tinker with the UI files and get something along the lines you want, but it would certainly be quicker if you just get the settings to save yourself and go that route.
EDIT: Also your image for keymappings is a bit odd given how you skipped Extension Bar 1 Slot 10.