Is there a way to add a DFF in the Split Allocation section of an expense item for Asset Number?

Summary: We need the Asset number DFF to be carried over to AP when the expense item is split, so each split line can keep a different asset number. The split may be based on either the Account or POET.

How can this be handled in the following cases?

1. We already have a context-sensitive DFF in place for another DFF, Purchasing Category, with value set EXM_EXPENSE_TYPES in Context Segment
2. Once these lines are transferred to AP, how will the DFF be populated at AP line level? We also have other (different) context-sensitive DFFs created on the AP side.