Work Center selection not working in MILL_OC

I’m using transaction MILL_OC to convert a bunch of planned orders into a single Mill Products Production Order.

The selection screen works fine when I select by MRP Controller and Date.  But as soon as I add the additional selection of Work Center I get no results.

I have verified that my Work Center CHI_F2 is indeed in the scheduled planned orders.  My work center category is 0001 Machine.

Any idea why this is not working?  Thank you.