I have already been in contact with Ray Gralak on this issue without resolution so I'll post here. I have version 5.00.03 AP V2 driver running under ASCOM 6 and ACP 6 (hotfixed). I have a bias and darks plan set up, and I soon as I run the plan, the scope tracking rate changes from "Stop" to the "custom rate". Not sure why it would so this since ACP should know that I'm taking darks and not imaging a real celestial target. I'm looking for a way to turn tracking off in my plan, but it isn't obviuos to me. The first time I did this to build a darks library, I found my scope pointing toward the floor after te darks library plan was complete.

I think this issue is similar: