I am having trouble importing DFF files. They play just fine in MC17, and DFF is set as a known file association. If I try and import the folder where the files live, I get the report that 0 files imported. If I go to Windows Explorer, right-click on the folder and try the import that way, I see that 0 files are imported (all the files are "updated").
What am I missing? Why won't these files import into the Library??