I had a situation where I moved to CA from AZ and originally registered my cars with AZ plates.

I got a violation notice one time when the transponder didn't pick up and I had already changed the plates to CA and it was as easy as adding the plate to my account to avoid the fine altogether.

I would be surprised if you have an issue given the transponder beeped but if you do it is reversible after the fact if you add the plate and car to your account.