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same here, also losing all skill points

Same here, in my case its because adding vampire with edb prepare carefully with vampire faction option.. When i just add human then add vampirism health condition, looks like fix my issue

yea, i've had a vampire in my jail change clans 3 times...lasombra...pijavica....now nosferatu... =(

Might be important to note: I captured him from the 'ancient vampire lair' (?) event

Also, he's lasombra again now.

At the event, it happened several times where, I'd awaken him from the coffin and as soon as I'd unpause it, i'd get an error message, and about 50% of the time, the pawn wouldn't have vampire powers on his health tab anymore, he was just a regular human.

I'm using prepare carefully, so i tried the above suggestion, dev mode remove vampirism, apply vampirism, set to lasombra 5th gen. reload game, now he's ventrue.

this was an issua over a year ago, how is this STILL a problem? RimWorld is a game all about telling stories through gameplay. how can the staory be consistent when my vampires change generation, clan, etc EVERY SAVE/LOAD?