Split the AP Invoices at the time of ASBN import (not from isupplier)

Hi

We are in R12.2.5, and have a requirement to restrict the number of AP invoice lines at the time of ASBN import.  However it should not disturb the container id.  For eg. in a container in sea shipment, there are 1100 items, when the ASBN is imported into EBS, it should have 2 invoices - invoice 1 with 900 lines and 2 with 200 lines.  Is there any way to split the ASBN into two without impacting the container id?  Please note that we are not using iSupplier and the ASBN is sent through ftp.

Regards

Krishna