3023837 - In manage project billing app, multiple billing due date in the past will always be summed up

When there are multiple billing due date in the past, in manage project billing app, they will always be summed up.

SAP S/4HANA Cloud

1. Create a customer project with billing WBS element (fixed price).
2. Maintain 2 billing due date in the past.
3. Go to manage project billing app.
4. The amount of the 2 billing due date will always be summed up.

Currently, it is standard behavior.

This is going to be improved in the future release. (It has not been decided in which release) 
In order to create separated project billing request (PBR), as a workaround, one billing due date can be removed from the billing WBS element.
After creating one PBR, add the billing due date then create another PBR.

manage project billing, billing due date, customer project , KBA , PS-FIO , Fiori UI for Project System , Problem