MRP for project stock ignores Mateiral Lot size

Dear all

When running MRP (md02/md51) for material with requirements under project stock, MRP run seems to ignore the Lot size procedure from material master (in this case FX) and proceeds with planning via lot-for-lot procudure EX.

In generated planned order, under master data tab, procedure FX is visible, but obviously the lot size does not adhere to that.

Any thoughts?

Thank you