Scenario: You have a customer with an separate invoice account on the customer record.

The same customer is setup on a project contract.

When invoicing the project and creating the project invoice proposal and selecting the project contract. The invoice account from the customer record is selected instead of the customer on the project contract funding source.

A workaround is to create two customer records for the same customer (one with invoice account and one without).

The funding source on the project contract have to be the customer account without an invoice account.

This workaround generates tremendous numbers of customer accounts.

It should be possible to select when generating a project invoice proposal whether the funding source or invoice account is the receiver of the invoice.