Execute code whenever a craft saves new part positions

[SG Aero]

As title describes. I'm wondering how I can make it so that whenever a craft would save the location of it's parts, as in breaking ground, it does something else instead before saving. I'm hoping to try and counter robotics drift by just turning off gravity and physics so that the parts destress before saving, but I'm not sure how to do this and I can't figure it out with the documentation.

[leonardfactory]

I'm not sure about your use-case, however given your description I can think of GameEvents.onPartPack or GameEvents.onVesselGoOnRails. Have you already checked out the GameEvents documention? (the links are from the docs)