Anybody else have issues with two CAD models in the same file?

[[Be...]]

I tried building on an existing inspection plan by adding a second model to the file.  

It would randomly delete the second model from the file and I had to reload it several times.  

We are using 2024 Calypso.

I did most of the added programming with the first model hidden.  

When I went to test the program it started fine, but then the alignment was super twisted.  I would do a manual start alignment and then it would do the basic alignment.  The first iteration was fine, but then the second iteration was just wonky and it wanted to crash into the part.  I don't think I fiddled with the basic alignment.   It was like when I rotated the second model to make it match the orientation and location of the first model that first model (which defined the basic alignment features) rotated even though the first model was directly aligned with the second model.