Our users phone numbers were truncated because of being entered as lengthy international numbers and now many have the same digits. K-12 Core is recognizing these NUMEROUS families as potential duplicate users.  If I were able to either turn off "wireless phone numbers" as a comparison point OR merely filter the results by what point K-12 Core found in common, my life would be so much easier.  With my data set, users with the same name are much more likely to be actual duplicates than users with the same phone number.  For others, the opposite might be true. This is why it would be a nice customization for user data managers.