[VoiceOps] Can carriers still refuse port-outs if an account is being closed?

We've had issues in the long past where ILECs in particular would refuse a port-out for "pending orders" if they had received a 30 day notice of cancellation. This basically would help get them an extra month of revenue. We have a customer whose service renews in a few days for another year, if they don't cancel. If we enter a port order today, and they give a 30 day notice tomorrow, could that port be blocked?