Can I ask you what you did with Viconia in BG1?
Well, for the sake of continuity I finished the game with the canon line-up i.e. Khalid, Jaheira, Dynaheir, Imoen and Minsc. But since I was curious about some of the other NPCs and their added content with the NPC Project, I travelled with the likes of Viconia, Shar-teel, Tiax and Safana for a time. I finally left Viconia in the Gnoll Stronghold when I fetched Dynaheir though, but this was only after I'd travelled with her for quite some time, completing many side-quests and some of the main quest. If she were level 6 when I left her, I don't know - it's possible. The BG1 spawn had Taugosz Khosann as her most powerful kill, so that must mean she partook in my battle in the Bandit Camp before I dropped her off. I remember doing the Bandit Camp only after doing many of the other quests.
I tested the saved game and everything seems fine. Viconia responds correctly when restored, and her stats, kills and affects all look good too.
Thanks a mil, Ascension!