i don't have an assassin that high a level.

but it could be because safegames don't get patched.

so if you started the game before the fix, and just loaded it after patching to the version in which it was fixed, then it still won't be fixed in your safegame.

you have to create a new game to make it work.

Yes the save games save ALL xml data from when you create the game. It is the way they maintain backward compatibility. So if you wish to see xml changes in your game you must start a new game.