Gustavo:

I'm still not able to select the autodetection regions for editing.  There must be something simple I'm missing.  Again, I can edit manually selected regions.  When I click on the Select Regions button, the manually created regions are visible but not the auto-detected ones.  

Thanks!

Ok, I re-read your previous message and have figured out how to invert shapes and I can remove the false positives!  I guess I can do the same to edit the autodetection areas (?).  I've watched a video on the DVO tools by Björn Lantz and trying to do some of the things he's doing to edit these areas, but it's difficult because he's so fast!

More progress. I didn’t realize that you could add Scratch Target in 2nd instance and clean up with manual settings.  Then dry clean to help further “clean” it up. Slowly but surely I’m learning. 

Thanks Gustavo!