I'm trying to import contributions from another source, and Civi gives me a "no matching contact found" error for each record. I've checked my csv data, my Civi data, my field mapping, and my unsupervised dedupe rule (all of these are individuals).
I can copy the email address text from the csv file, search for it in civi, and find the correct person and only the correct person. But, when my unsupervised dedupe rule is set to email only, I still get "no matching contact found for ([email address that is in fact in the database] )" when I import.
What else should I check?