Earlier this year I booked a transatlantic flight on Austrian in booking class P. I am very sure that when I booked the flights this booking class still accrued miles on M&S (as does booking class P on LX flights still today).

However, when I checked the M&S website today I found that booking class P on OS was not available for mileage accrual any longer

Does anybody know when this changed? Once again, I'm very sure that it still accrued miles when I booked the flights in February.

Is there anything I could do?