I, too, am a reapplicant (housed by the Couples' Match), though I did a research fellowship in Ortho rather than a prelim year.
So far, one school I rotated at as a student has invited me back for another interview, and the other has not offered interviews yet. However, that interview from my rotation is the ONLY duplicate interview I have currently. All my other interviews are from either places that rejected me last year or places I didn't apply to last year. Many of the other programs I interviewed at last year (total of 17 interviews) have either rejected me or have offered interviews already, but not to me.
I thought this was a very strange trend, because I've been told I interview well (i.e. I didn't majorly blow it when they met me in person). It's good to know other reapplicants are experiencing the same trend.
Good luck, all!