I mean trading gold is completely untrue regardless of if it's per email or character to personality trade. . .but based on how much you really trade there's always the danger that the machine or whatever they have to detect such matters judges you as bot or illegal thing. . .so either simply try it and wait if anything happend or go the safe way and produce a ticket until you exchange it over so you've got proof that it is actually your gold.
gold wow classic
https://www.mywowgold.com/Wow-classic-Gold.html