OrderRel.OurJobQty - But No Jobs?

Where does OurJobQty in OrderRel come from ?

I have a particular order, with an OrderQty = 4, OurReqQty = 4 but OurJobQty = 40
I cannot see any jobs linked to this order in JobProd

Perhaps the selling UOM is different than the inventory UOM or something?
Do any job suggestions show up for it?