Yep, unfortunately this is true. Giving or receiving ridiculous amounts of robux (sometimes few amounts) through groups (or even through donation games) often results in account deletion with the note “Your account has been moderation for buying, selling or trading Robux or virtual Roblox items outside the Roblox website”.
They do this because they can’t 100% determine if you actually sold robux outside of Roblox, so they’ll terminate your account with 1% doubt.
This case happened a few weeks ago with someone with 210k followers
In spite of his popularity his account is still terminated till this day.
Some posts have been made about this. It’s a very common problem but not a lot of people are talking about it.
Of course some of the victims got their accounts back, but it’s incredibly difficult and it just depends on luck, and Roblox Support isn’t guaranteed to actually review your case and unban you.
You can’t ‘get’ a roblox staff’s permisson to transfer this huge amounts of robux. It’s how their flawed automatic moderation system works. It automatically takes moderation actions against accounts. No moderation actions are being made by humans. They don’t have control over this. You’ll either be ignored or told that they can’t do anything.
I strongly advise you not to transfer robux to your main.