Create a single AuC for all WBS on a project

Hi Gurus;

We have an investment project with several WBS elements which will be setteled to a AuC, by using an invesment profile we can create AuC when project is released, problem is one AuC is created for each WBS element, this creates a bit of chaos on financial reports and we have recieved a request for all WBS to setlle against the same AuC instead of several.

One way would be manually creating the AuC and then assing it to the settlement rule but this way we loose the automatization gained by asigning an investment profile. Is there a standard way to change this system behavior?

Thank you in advance for your time

-Pelayo;