Is it illegal to spin metal fusion/fight Beyblades in a burst stadium?

Is it illegal to spin metal fusion/fight Beyblades in a burst stadium?

It’s not illegall, but I don’t think you battle metal fight beys in a burst stadium for tournaments

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Blader for 8+years, CA Organizer, hoping to improve at the game and meet more people along the way. Let It Rip!

yes its perfectly fine and Im fairly certain that its even standard for tournaments

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 Why is every Leone Bey so good at attack? It's supposed to be a defense type

Especially due to people not want to either having to buy or keep old metal stadiums or instead use there just normal burst one