you want to know what are included Common changes in IRP records
yes
add or delete vehicless transfer plates from one vehicle to anothers  add jurisdictions
What else do they include?
increase or decrease registered weigh
How can I do it by phone?
You ca n't make changes to an IRP registration by phone
What instructions should I follow?
Follow the instructions on Schedule A&C [ 2 ] IRP-6
and how do I do it by mail