How to change Revenue Distribution when revenue recognition is deferred until receipt

Summary:

Need to be able to enter the revenue distribution for a manually entered invoice which has revenue recognition rules attached.

Content (required):

We have invoices than are entered manually into the screen. The invoices have revenue rules to defer revenue recognition until the cash receipt is applied. When the user is entering the invoice and click the link to view the distributions they can only see the ones which will be immediately generated on the invoice, i.e.

DR Unearned Revenue

CR Accounts Receivable

Once the invoice is paid the revenue line will appear however we are looking for a way for the user to enter the revenue account when entering the invoice rather than having to come back once it's paid and update the revenue distribution.