AP Open item - cleared line items migration from legacy to S4 hana

[vjnov14]

We have a migration scope related to AP Open items - cleared line items.

Structure of the legacy data :

(One to many) One posted document has several payment based line items (One doc containing multiple payments) that are cleared but not encashed, we need to migrate such documents from SAP legacy to S4 Hana.

Approach for migration: One doc is related to one payment, compared to legacy data style that is not aligned.

Question:

1.When we migrate the AP open item - what happens to the clearing reference number against the old legacy open line item ..is that migrated too ?

2. Legacy data migrated ( one payment line item with clearing reference as part of multiple payments under one doc) - payment line item has to be reversed in the new S4 Hana .. how will that scenario be handled because we will have a new document number against a single cleared legacy line item - what clearing reference will be reset/reversed? an example shall be helpful.

Thanks in advance to all the experts.