Model shifted after reopening program

[[Ni...]]

I started a new program offline and had start the usual way: rotating part 180 degrees to correct orientation desired, making base alignment, making clearance plane then start making my features. Then, a few days later when I opened my program again, everything was there, except the model had been shifted from the its features and alignment. In the +y direction it moved by the length between my circle datum B and circle datum C, and shifted in the +z direction by half the thickness of the part.
I thought this was odd and decided to simply move the model the amount it was shifted. All the features where back in their place on the model and I continued programming on it, saved, and closed it.

I opened it today, and again the model has been shifted the same amount from its features, including the new features I added yesterday.

Anybody know why or how this is happening? 🙄

I suspect it has something to do of how I made the base alignment or/and the initial model rotation before programming it. ❓

[[Ow...]]

Here's link to a recent post discussing the same issue.

viewtopic.php?f=13&t=1087&p=7413&hilit=model#p7413

[[Ri...]]

Oh yeah. Well I wrote a program once, saved it. Opened it again, and now there were two models (just mirrored of each other). Lol.

I think it was the model that was causing it, because I've never had that issue again. Pretty cool.