My name on my AA account has never had "Jr.", but my passport does. I've never had a problem.

But I just added Jr. as a Suffix on my AA account, and tried to add my new passport with "LAST JR" as the last name, just as on the passport, and AA says it's a mismatch. It doesn't seem to realize the there is no Suffix field on a passport - it's appended in the last name field.

And I can't delete the suffix on my name. My wallet isn't here - I wonder whether my DL says Jr. If it does, my ticket and ID have never matched.