We've been working with several movable scenic objects that have multiple moving components to them and occasionally, these objects will blow apart into all their pieces and lose their given origin. The only way we've found to fix it is to delete the library object completely, re-import, and rebuild it from scratch. We've been able to achieve the desired outcome by nesting a movable scenic object inside of another movable scenic object. We're wondering if this might be causing the issue but we can't seem to find another way for the complete set piece to stay together but also have individual moving components.
I've attached two photos of what the set should look like and what it looks like when it breaks apart. I also have the logs from the showfile if that's helpful.