The setup pose is different when loaded in v4 affect every animations.
In latest beta 4.0:
In stable 3.8.99:
Sample Project:
Incorrect_SetupPose_In_v4.7z
The setup pose is different when loaded in v4 affect every animations.
In latest beta 4.0:
In stable 3.8.99:
Sample Project:
Incorrect_SetupPose_In_v4.7z
Yikes, that's not good! The cause was path constraints from older projects did not have their Y mix set to the old translate mix. It defaults to 1, which moved bones unexpectedly.
We've fixed it in 4.0.62-beta, which we'll release today. If you need a fix sooner, it could be fixed manually by setting the Y mix for each path constraint in the setup pose (keys in animations don't need fix up).