How to migrate all the Source lines in Fixed assets in data migration

Hi,

Our client in upgrading from Oracle ebs to fusion. So, for 50% of the assets, there are multiple source lines and we are unsure how to migrate all of this data from ebs to fusion since there won't be closed invoices/POs being migrated to fusion.

One Approach I can think of:

Enter the Source lines information in Mass Additions FBDI i.e in the columns Invoice number, PO number. But there is a problem, all the information would have to clubbed under a single cell. Also, there are characters limits in fields like invoice number.

Can you please suggest the best practice to migrate the source lines from ebs to fusion.