Unable to update Movement class for Item-Warehouse using the Update Movement Class screen (IN506100)

Hello, wondering if anyone is or has had the same issue when updating the current movement class for an item-warehouse using the Update Movement Class screen (IN506100)

I’ve tried the following:

1. Select Warehouse and Period, then Click “PROCESS ALL”
2. Projected Movement Class would populate on some items
3. I’ve tried selecting an item with a projected movement class and then click “PROCESS”
4. Current movement class for that item would not get populated on (IN506100).
5. I checked warehouse details for that item-warehouse and there is no value on the movement class.

I’d appreciate if anyone has any suggestion or knows what I’m doing wrong to let me know. Thank you!!