Configuration Challenges with Responsive Self Service Procurement (RSSP)

Summary:

We have enabled the RSSP in one of our lower environments and I was creating a test transaction and multiple "defaults" that we have configured in classic are not carrying over. Need some assistance if this is something we need to setup or if it's a feature gap with RSSP.

Content (please ensure you mask any confidential information):

1. The "Account" Segment should be mapped to our purchasing category, and this information is not carried over into the charge account section,
2. When I try to manually select a valid Charge Account from this list, it gives me an error saying "enter a valid segment for Account" but the segment entered is valid and works on the standard self service procurement.