Unable to save invoice group definition in R12.2.10

Hello Team,

I am defining a new invoice group in OLFM R12.2.10 module as below :

1) Define header definition.

2) Define invoice types.

3) Define Invoice lines.

4) Add streams(Only seeded streams added)

5) Finish

When we re-query the invoice group and navigate to invoice types we cannot find any invoice lines or streams defined earlier. We even tried defining the invoice group in bits and saving and re-querying it but again the data is lost.

It is just the invoice type header which remains each time but the underlying invoice line type and streams are not saved at all each time.

Please guide