Thanks, but this discussion (and others) seem to deal with the problems of generally not being able to work with .mov files. This is not my issue, I can import and edit 8 bit 4:2:0 mov files.
Powerdirector 19 help states that the following under "supported file formats":
MOV
QuickTime file format. H.264, H.265*, alpha PNG, 10-bit 422 Apple ProRes*, and V210* codecs supported.
So I wonder if apple ProRes is the only 10-bit 422 video format supported. I'd like to use the extra dynamic range and color grading options that 10 bit 422 provide.
I use a Panasonic G9, and the video output in this format shold be the same as from the GH5. Since the GH5 is quite popular for video I assumed that others ran into this problem as well. But maybe they use other editing programs.