If you have a vanity plate on your car, can you just swap it out for the number plate without losing the vanity tag (assuming you have the vanity tag fee paid through the next year)? Just wondering ... considering going with numbers for a while but I don't want to surrender my vanity plate.

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1987 300D, arctic white/palomino--314,000 miles
1978 240D 4-speed, Euro Delivery, light ivory/bamboo--370,000 miles
2005 Jeep Liberty CRD Limited, light khaki/slate--140,000 miles
2018 Chevy Cruze diesel, 6-speed manual, satin steel metallic/kalahari--19,000 miles
1982 Peugeot 505 diesel, 4-speed manual, blue/blue, 130,000 miles
1995 S320, black/parchment--34,000 miles (Dad's car)