Quartz camera settings not sticking

[Jinx75visuals]

I had some quartz compositions I wanted to use in resolume for a show this weekend. With my external HD webcam plugged in, I changed the camera settings in the patch to the external camera, saved the comp, closed it, and dropped the patch into the clip panel in Arena. I did this for several patches, and was able to see them working with the external camera for a period of time. I had to save the comp and close Arena, and when I opened it again all the patches had gone back to the facetime camera except for one. I repeated this process of changing settings in the patch to external camera, saving it and dropping the patch into an Arena clip. Quartz patches continued to randomly switch camera settings back to facetime camera. I know it wasn't a camera cable issue because at least one of the quartz patches continued to work with the external camera all night. Any idea why this is happening? Thanks for any help you can give.