After doing some playing around with BGEE on iPad and iFunbox, I was able to get the a character from the original Baldur's Gate 2 working on Baldur's Gate Enhanced Edition. I wasn't even sure it would work. I wanted to let others know how to do it.
First, it sould be noted that when you import a character from Baldur's Gate 2 at the beginning of a new game in BGEE, he/she will start over again at level 1. The only thing that carries forward are the character stats, class, race, base AC, abilities, etc. Some armor and weapons 'may' transfer. I've done it twice and once the character had items and one didn't.
For the iPad version you'll need to download the program iFunbox. Also you'll need a character. You can export your own character from a game save. I found some good characters available for download at http://www.paul-meredith.co.uk
but you can probably get them at other places.
Now, use iFunbox to copy the .chr file to the "characters" folder in iPad. [ Baldur's Gate ] / Library / Characters. If you have a .bio file you can copy that over too. On PC you won't need the iFunbox step... Just copy it over.
Now in BGEE you can start a new game and import the character you just transferred. You can still adjust some of the characteristics of the character as you like.
Update: I figured out how to get old profile pictures to work. By default there's no [ Baldur's Gate ] / Library / portraits folder in iPad, but you can make the directory and than add your character pictures there. Then restart the app, load the game, and edit your character picture once in the game.
The sounds directory appears to be read-only on the iPad so I can't add any custom voices. (Baldur's Gate App / lang / En_us / sounds). If anyone else figures out how to unlock this directory, please let me know. I presume it's possible to do on the PC version.