Well the first field / second field Display vs display both was interesting, but dissapointing. I had high hopes that the display both was going to correct the ghosting problem.
It looks like the two fields /scans are not being integrated correctly/ accurately and that is leaving an artifact of one or the other depending on which is set to display first.
I did confirm that the ghosting is showing up in an exported file just as it is while editing.
I am not sure what is left at this point to try. It is baffling to me why this would be an issue with CS6 but not an issue with CS4?
Any additional help ideas by anyone would be appreciated.