Posting accruals

Hello,

This is the scenario:

step1. I need to post some sums on an accrual account, before sending the final invoice to the customer (1 month in advance for example)

step2. When sending the invoice to the customer, I have to clear the accrual account and post the respective ammounts on the revenue and customer accounts.

I had this in mind:

- create SO

- create invoice to post ONLY to accrual account

- create final invoice (and maybe credit memo to clear the accrual account)

Please advise me on how you see as the best approach to the scenario.

Thankyou in advance,

Cosmin