Correct, unless you count the public rehearsal at Hershey on 7 August 1992, when Sunday Bloody Sunday opened. "Old" songs were pretty common as openers in the eighties. No War song opened a War Tour concert; it was either Gloria or Out Of Control. 11OTT opened most UF Tour gigs; UF songs only opened twice, with Wire at one Melbourne gig and MLK at Lyon. Then a cover of Stand By Me opened some JT gigs (at which TTYW, of all songs, was sometimes the first JT song in the set), and on Lovetown, the old songs that opened were Streets, Bullet, and IGC.
After all these years of opening with a new song, I'd welcome a change of pace with some old song opening at least some shows.