Scheduling material with contraints

When we did some testing recently for material constraints, we found that both purchased and manufactured parts could benefit from using this feature and get us closer to “smart” rescheduling of jobs. However, it reschedules purchased material based on the raw material part lead time without recognizing open PO dates which will get the material in house sooner than the standard part lead time in Epicor.

Does anyone know if there is a setting (maybe in plant or company config) that will help Epicor recognize PO due dates when rescheduling for material constraints?