BCM is correct based upon all info I can find.
I thought about the CLP, but it is a recent replacement (not that it can't fail) and no sign of water. Car isn't driven in the rain and is hand washed now.
I would lean more towards those, but when testing the limit switches they show as good. What I am stuck at is that there is no LED light at the spoiler switch and it doesn't activate or show as in use in DRBIII- so the system doesn't know it is working. All the troubleshooting guide said to replace the switch itself. I did that with 3 different switches with same result.

As I understand it here is the order
Wing position known - either full up or down
Windows down or doors open
open latch switch
then roof will operate.

I am 99% sure it is the first step that is blocking the system. I will go back over the limit switches again, and make sure they are registering as activating, but the car definitely doesn't know where the wing is.

Thanks for the ideas.