3D model movement translation causing unpredictable model explosion. (video)

link to video showing problem:

https://youtu.be/XkmTYczgwQo

I have a usdz file of a prefab house and I'm trying to move an object on the site to the 0,0,0 location. The object represents a peice of paper you would set on the dirt like an image target. Anyway when I do this the model seems to explode when I do a usdz file export.

Thanks for your help.