After solving the compatibility issue with save games and finishing Leon A's scenario, Clair B's scenario starts up. Very awkward tho, cause I'm in Clair's body with Leon's voice. Also, there seems to be conflict with data, I'm getting Leon's shotgun (which Clair cannot use) and also getting shotgun ammo wherever Leon found his. There was only one place where i found correct ammo for Clair and that place wasn't used in the Leon scenario for shotgun ammo.

The second obvious mix up is that i'm finding the same chess plugs where i found em for Leon's scenario (but i'm supposed to be getting animal stones). I've got 2 chess plugs and 1 stone(the stone was found in a place where the chess plug wasn't there in the previous scenario.

This is clearly a data mix-up, anyone contacted CAPCOM, or found a solution?

I have the same problem
haven't found a solution

this is because you went to play leon's scenario with claire's disc. You have to use leon's disc in leon's scenario and the same goes for claire's scenario ( u need to play it with her disc) that's all.hope i helped ^^