Moving accounts and the members with them

So I started a server with someone who I thought I could trust, but I couldn’t at all.
He ended up pocketing money and not using it on the server and not giving me what I needed which caused our server to slowly die, so I took over everything and kicked him off then took payments for myself. Long story short he was the one that made a RestoreCord account under my suggestion and then I got the login and set everything up, the account is business and has over 1.7k members authorized on it, I don’t trust him with this at all and since the account is under his email and all that I can’t change it, I was wondering what the “export” feature does and if I can move all the verified members to a different account and continue using it.