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Group un group problem when track layers expanded
I clicked on expand track layers I found that hash marks that in indicate that some one track partially behind another track. I can see from the thumbnails that they are clearly from different parts of the video. If I clcik on either part & try to move it they both move.
I thought that some clips must have been grouped. So I right clicked on both parts but the option to group or un group is greyed out.
How do I fix this?
Thanks in advance