Animated Character meshes all in T-pose from old project

Godot Version

4.6 beta pre release

Question

Hi, i downloaded the 4.6 pre release and all the character models are in the t-pose. I assume they have to be recreated in 4.6 for the new IK modifier? Is there a trick to make them animate normally?

I have tested the project in 4.4 and they work properly there.