As has been mentioned in the past, simply copying all the various files from one to another may not work well so I did not even try it.
There are various data files that are mostly for the EQ program itself, such as:
- eqclient.ini: amongst other things, this is where the video mode and the main EQ window size are.
- eqlsclient.ini: most (or all) of the data here only applies to Live Eq.
- eqlsPlayerData.ini: probably don't need to mess with this except for special circumstances.
- eqlsUIConfig.ini: I didn't mess with this.
- defaults.ini: this is used by the EQ program when creating new characters. If you're going to create a bunch of new characters and you want all their windows to be organized the same way, THIS is where you edit. But make a backup first.

Not all of these data files were in both UF and RoF2. Most were, but not all. And since I did not need to do a lot of messing around with them, I therefore did not do a lot of in-depth studying of them.
When you create an account, an account ini is created. Example:
- xxxJ_characters.ini: where xxxJ is the account name.
This is how EQ remembers the characters on your account and which server they are on. Here is what's inside one of mine:
[Characters]
Character0=Jaton,HiddenForest
When you create a character, two more ini files are created. Here are the ones for my Jaton:
- Jaton_HiddenForest.ini: this is where a lot of user micro-management is...button assignments for hot buttons, abilities, combat abilities, etc. Also, spell loadouts and blocked spells. And...Socials.
- UI_Jaton_HiddenForest.ini: this is mostly window settings, like position, color, transparencies, etc. Note that most everything in the main EQ window is considered a window including hotbutton bars, the little zone-to window, the compass, etc.
If I decide to set Jaton up as trader in the Bazaar, this will be created:
- BZR_Jaton_HiddenForest.ini
When I first started "cleaning up" my newly created Jaton, I had planned to manually re-enter all his socials and button assignments. But after a few minutes of that, I realized what a huge time-consuming task that would be. So instead, I made a backup copy of his original two character ini files and then brought up his new files and old UF files and placed them side by side. I then manually copy/pasted entire sections.
When I logged Jaton on, all his old buttons were there except for the ones that had been an AA Ability shortcut...those now said Not Usable. After looking a little bit, I noticed that RoF2 did hotbutton AA shortcuts a bit differently than UF:
Page1Button7=E123(old UF way)
Page1Button7=E294,@-1,0000000000000000,0,Servant of Ro (new RoF2 way)
Unfortunately, the old UF number of the ability did not match the new number, and so I was not able to simply append the new info. So I dragged and dropped the unusable buttons to delete them. But this wasn't a big deal, as there are comparatively few AAs that I would want a hotbutton for. Jaton only had six buttons labeled as Not Usable.
I got rid of the Collapsed Automaton button, in case anyone remembers that. It used to call up a little clockwork pet that threw heal spells. But Vaion took away the pet and made it an effect.
That's all I can think of at the moment.
Have fun.