Many P1 will eventually graduate to P2. In fact about half of the MUC-based P1 that I had on long-hauls said they'll do the P2 course pretty soon.
Sure. But what's the point?
Most current MUC P2s started their career at FRA. And most of them say they'd never ever go back.
It's not like they fell from the sky.
MUC station will certainly shape those new ready-entry pursers. There's nothing to fear.