I have two ZWO filter wheesl (7x50mm and 7x36mm).  I'm using using the ASCOM driver with SGP for image capture.  I run a tandem scope/camera setup.  
In SGP I choose the EFW for each scope.  For the second scope, I choose EFW(ID1).  The problem is that this choice is not remembered after saving and closing SGP.  So each time I have to manually choose the correct EFW, otherwise the two scopes will be trying to use the same filter wheel .
I'm not sure if this is a ZWO ASCOM driver issue or SGP, so I'm posting in both forums. 
Thanks.
joel