I kept the Tennessee plate when I purchased my trailer in Washington state until I returned home. I had insurance but was required to keep the plate while transferring the trailer to Canada. I was disappointed when they tol d me to give it up when I got my new plates. I would have liked to have kept it as a souvenir. But a friend of mine was told he could keep his plates from a trailer purchased in Washington. I'm not sure how the province MVB can claim ownership to my plates, but not my friends.
2008 Jayco Jay Feather Sport Ultra Lite 197
2005 Dodge Durango V8