OM Revenue Contingency mechanics and options

We are on OM and AR 12.1.3

At the moment all revenue recognition is done immediate. The challenge is to bill on ship confirm using standard OM/AR integration yet use revenue management to make a contingency based either a customer acceptance date or the number of intransit days after ship confirmation. This way the invoice date and terms date are correct for aging and collections yet revenue remains unearned until the order is delivered.

We've found two possible scenarios

1. Make a revenue contingency based on customer acceptance. Mechanically how does this function. I've done research and it appears the order will remain in order management in a workflow status waiting for the acceptance, then the user goes into the acceptance form and indicates when the customer accepted the order at which point the invoice is created with all of the distributions created. unearned revenue is booked at the time the order shipped and moved to earned revenue on the customer acceptance date. The key though is the order stays in order management and fed to AR with rows