If the plate is on the stolen M/B the Cops will probably contact you. A M/B isn't very valuable worth under $1K
I doubt very seriously the cops are gonna be checking the frame serial # when they already have the Plate #
If for some reason the bicycle detectives lol ask ya about the mismatched serial # on the registration, Maybe ya got proof of purchase for the bike. Or a good old fashion honest explanation.
God help ya if you need a witness
But someone like you might end up in Jail. it's a damn good thing your squared away with your plates and serial #s LOL
jkn