The EFCenter should shuffle it from the Pending tab to the Accepted tab once its been accepted by IRS.  You'll need to have it check for acknowledgements of course to get the acceptance.

Open client F6 Form 9325

Form 9325 will populate with information only after receiving acknowledgments.

If for any reason you don't see this "automatically" load you can highlight the return in your EF Center, go to the efile menu at the top of your screen and update acknowledgements from there.