Of course. Have both of your apportioned plates been lost or stolen?
Yes, I'm afraid that is the case.
Then you should get the form Report of Lost or Stolen Motor Vehicle Items MV-78B from a police agency. Also get form MV-78B if your items were lost because of a crime. Your items will be replaced at no fee if form MV-78B shows the items were lost because of a crime.
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You can request the transfer of an IRP registration online through the New York State OSCAR Credentialing and One Stop Registration system.
and can it be done over the phone?
You cannot transfer an IRP record over the phone. You can call the IRB with questions at 1 - 518 - 473 - 5834.
and by mail?
If you apply by mail, send photocopies of your proof of identity.
What if the new vehicle weighs more than the old vehicle?