Mixamo Character Rig + Motion System issues



I’m having issues with some Mixamo-rigged models. I’ve brought them into C4D and enabled the Motion System to convert animations to Motion Sources which work fine. Then I’ve added Mixamo Character rig on top which works well too, combining any number of Motion Sources with blending etc and adjust the Character rig to fine tune.

The Problem comes when I have a scene with dozens of these characters (saving takes about 5 mins, prob due to expressions, python scripts etc in the rigs) and I noticed after few saves and loads that some meshes loose their connection to the bones (see pic). Any idea what’s going on and is there any way to fix it without redoing the work and hopefully it not happening again?

Male-01.zip (21.7 MB)