Migrate AR Invoices with Original Invoice Date and different Payment Terms Date

Content

We are migrating AR Invoices from R12 to Fusion Cloud.  Our Invoices have a varied number of Payment terms ranging from 'Immediate' to '120 months'.  We are migrating all open invoices as in any other project.  But many of these invoices are partly paid, and in some cases only part of their payment dues have been paid.  In such a scenario, where certain invoices have been unpaid for a period of time, the client has gone in and changed the Payment start date to a different date, and has requested for the future instalments to be paid. 

Now, if we are to migrate these invoices with the same Invoice date, the payment terms migrated start from the original invoice date, rather than the revised payment start date.  In other words we don't see a way of migrating a Payment start date different from the invoice date.  Fusion takes the Invoice date migrated to be the payment start date.