If DXC should import more information than Xlobby's DVD Profiler import function do, the check box "Enable advanced <tag> processing" must be marked. If not marked DXC will import data in a similar manner that Xlobby does as default.
By pressing the button "Customize default tags" the information that Xlobby normally import from a DVD Profiler database can be customized.
The button "Customize additional tags" can be used to manage how information that's normally not imported by Xlobby is handled.
If any of the existing data in the Xlobby Collection Database input file should be preserved, the box "Preserve Xlobby Data" must be checked. By pressing the button "Customize data preservation" in DXC Main Setup window, data preservation options are accessed.
If you only want to preserve the coverart, first you need to uncheck the box "Preserve data unaltered". Then you press the button "Specify tags to preserve” and a new window will open. Then the easiest way is to press the button “Select none” and after that select the information you want to preserve.
You will probably always want to preserve the title and the display tags, so make sure you check these boxes. If you don’t do so you need to make the comparison for existing titles to some other tag already existing in your Xlobby database.
In other words, to only preserve coverart information you would leave coverart, display and title checked.
I hope this will help.