Project Budgets - Third party integration - having issues with Budgets that are interfaced from intf

We are upgrading from PS 8.4 to 9.1. We have an interface between unifier and PS projects which transfers data to INTFC_PROJ_RES and which pushed data to proj resources.

In 9.1, we are using Project Budgets in PS, so we need to transfer budget rows from Unifier to INTFC_PROJ_RES. From peoplebooks, it specifies that interface id should begin with 1200000 or 160000000, so we tried using that and assigned the required fields for Budget interface in INTFC_PROJ_RES.

When we run load transactions process, the budgets are trying to push to commitment control tables and budget plan & detail tables which is wierd as the PC_WRAPPER process in 9.1 will do that. Is there any flags that needs to setup on INTFC_PROJ_RES table that the budgets will not transfer to commitment control directly during load transactions process?