I see thumbnails from other rooms at the place where my still images should be. Even when I move images from the room into the timeline, the thumbnails go wrong and are transfered into the time wrongly. I have deleted the thumbnails in the cash folder as was suggested in the forum before.
I have this problem since version 12 I think, and I am doing projects like this every year a number of times.
The way rooms are handled with potential downloads includeddoes not make the problem simpler I would recon.
I would suggest that by now the PD cashing would be corrected. Please do this. Cleaning the cash and restarting PD is not always productive.
I have (again) forwarded the above as a suggestion to CL.