Someone will surely explain in more depth and with better direction shortly, but I wanted to share this to maybe help you quickly...
The ones that show as matches, that means there are already profiles in WikiTree for them and you don't want to create another. You only want to create new ones that don't yet exist. Then once imported you will be able to link those new ones to the "old" and be all set. They are skipped to prevent making new ones. You will want to leave them as such.
I hope this helps :)