When the B1900 was removed and pilots became redundant in impulse, (it happened in Eastern when the Jetstream was removed, and no one gave a toss), they retained their right to go back to impulse when a position became available, and that’s fine but to expect another company, remember there was and still is no agreement between the subsidiaries, to take on and train pilots knowing they were going to leave, what would you expect them to do.
Remember it was the pilots at Eastern that tried to organize an integration agreement that gave impulse pilots rights over everyone else for perpetuity that they found unacceptable. This would have insured that any redundant pilot would have been put on before anyone off the street but like I said it was the IPC that rejected it.
Remember also its Qantas that ultimately say who is hired not the pilot groups.