How to bring Dropships and ISOs from 11.03 to R12

 Hi,

 We are migrating from 11.03 to R12.1.2. we are migrating Dropship orders  and ISO can anyone please let us know how to bring the data into r12.

What are relations (reference fields) which we need to be checked and maintain for the below scenarios.

1. Dropship is raised and no Requisition created against it

2. Dropship orders raised and requisition created

3. Dropship orders raised and po created but items not received against the PO.

4. Internal requisitions created but no orders raised

5 Internal requisitions created and ISO raised in OM

6. Internal requisitions created and ISO raised and shipping is also done but no receipt against the requisition