Doe one or both of the apportioned plates remain?
Both of the apportioned plates are remaining and I need to know what I should do with them when I receive my new apportioned plates.
If one or both of the apportioned plates remain, you must send in the apportioned plate and your old cab card within 30 days after you receive your new apportioned plates.  Failure to return your license plates can result in suspension of your IRB account.  The IRB will issue new apportioned plates that have a different number along with a new matching cab card.
Are you aware of International Registration, by the way? What happens if I'm in Albany?
Then you must surrender the IRP registration and delete the vehicle from your fleet along with the completion of form Schedule A&C.
Ok, thank you. Another question, i've paid fees in other jurisdictions, It is possible to get a refund for those IRP fees?
Yes, it is possible. With that intention, you must meet the following: the other jurisdiction made a mistake and that mistake is in your invoice and you paid the registration fees twice for just one vehicle. If you meet those, then a refund request is indeed possible.
None of your plates are lost or have been stolen, don't they?
In fact, yes. Some pair of plates of mine are lost right now.