Hi Jim, me again.
Sort of two questions in one. First of all, all imports of data in GEDCOMpare are done on an individual name by name basis through either the Add button, when there are no Suggested Matches, or through the Edit Button when you have matched names. If you don't hit the Add or Edit Buttons, they won't be imported into WikiTree. GEDCOMpare does not automatically import data. You must initiate the import.
Also, in the first column where the ID number is, you can click on the box to let GEDCOMpare know you don't want to import that name into WikiTree. However, this does not cause GEDCOMpare to ignore any Suggested Matches for that name. You must still clear the Suggested Matches. Since you don't plan on adding that name, just mark all Suggested Matches as Rejected, check the box in the first column to mark it completed and move on. And if you Hide Completed Rows, you don't have to see them as well.
I do like the idea of an Ignore marker for those where you don't plan on adding the name to WikiTree, you don't have to go through the Suggested Matches. You asked this question under the WikiTree Help Category and should have really been under the Tech Category, though your tags of GEDCOMPARE and IMPROVEMENT are spot on. You may want to close this question and re-post it under the WikiTree Tech Category to insure those who need to look at it see it.