MPS doesn't pick up WO status 90


Our client is using World A7.3. Even though WO status 90 is set to Y on inclusion rules, these orders are being ignored.
Work orders for the same item and branch at a lower status do get included.
Any ideas as to why this could be happening?
I don't know World, but back in E1, a WO status of 90 indicates that the WO is completed, in which case there would be no more open quantity to plan. Is that not the case for you?