Best Practices for Approved Revenue Budgets in Project Management

In Oracle Project Management, the Approved revenue budget Financial Plan must equal the allocated funding amount before it can be baselined. But in actuality, our revenue budgets, which are estimated/built bottom-up based on resource assignments and rates, are rarely exactly the same as project funding amounts. We want to use the Approved Revenue Budget Plan Type because it provides many functionalities that other Plan Types don't.

Does anyone know what is the intended business process for using Approved Revenue Budgets? Right now, we are creating an approved revenue budget that matches the funding and use the Working version to capture the budget built by the PM from bottom-up. The problem is, the Working versions can't be viewed on the Reporting tab.