This is exactly my understanding. The requirement is that pilots have an opportunity to bid on the position, PWA 22.E.10 doesn't say anything about the vacancy being posted as open on an AE, just that there can be no active pilot who bid for it, which would seem to include vacancies under both 22.E.1.c and 22.E.1.d which are contingent vacancies and other vacancies.

In point of fact, when discussing what positions have been available for new hires, discussion on whether there were unfilled contingent vacancies or backfilling was not completed has been part of the discourse.