@BigRedConsulting 

In your case, I'm not sure why you're doing that you're doing. Generally, income is recognized when you earn it. And, when you issue an invoice, its date is generally the date that's used to recognize the income for a sale.

It's common to accrue revenue in industries that have long-term projects.  The revenue must be recorded as earned (according to GAAP) since they have met their performance obligations.  However, they are unable to bill for it because of the provisions in the contract.  Therefore, accrued revenue is where it goes until the customer is billed.