Hypothetically, could a dahlia survive being half dug up?

I bought this gorgeous dahlia sp. this summer and it’s still thriving (east mids), but I don’t know what it is I’ve bought and I’d like to save it if I can.

Has anyone had success by digging up half the tubers and saving them, then mulching the rest of the plant as it naturally dies back? Just trying to hedge my bets as I adore these blooms.