Are you certain you are using the same programs in DEV and QEC?
execute AOBJ and compare the program names that you can see in detail of the archiving object.
for the problem with ALO1, I could be missing functionality. I found this Note 1409627 - DRB: PP_ORDER Enhancing the relationships
Maybe it can be used for PM_ORDERs too otherwise you may need SAP to get the same for PM_ORDERS
I suggest to search service market place using this search term: DRB requisition
I found 25 notes