Do paid upgrades (e.g. Coach to BusinessFirst on ps service JFK SFO) count toward PQD requirements to requalify for 1K?

If so, can United be pinned down to actually say this anywhere in print? This is AWOL from their FAQ.

(I have to decide whether to bolt for AA, and it is a complicated question. I can tell this is a marriage on the verge of divorce, for I've long felt everything United does is sneaky, and dodging any meaningful discussion of paid upgrades is part of that picture. This is an obvious FAQ entry, it should be there.)