Remove adult but keep purchases?

you digital purchases are connected with you main account, account that did the purchases, so you cant change it t another account you belongs.

If the purchases were made on the adult account, you will lose them if you delete the account unless
your Xbox is set as the account's home console.

Parent accounts in a Microsoft Account Family are separate accounts. So removing an adult account or adding a new one should not have any impact on the child account, outside of which account can set Privacy and Online Safety Settings, Screen Time, or other
family account setting options.

Purchases are tied to accounts, individually, and not family wide, so it would depend on who purchased the games as to where that would take effect. Removing a parent account from the family wouldn't necessarily change it's Home Console designation, so
if that account was sharing games with the family that way, that would remain unaffected as that account is set to Home Console.

I hope that covers the situation you were asking for. Please let us know if you have any additional questions.

You could possibly add a child account and migrate it to an adult account, but the purchases will still be tied to the main account

Basically to remove them spending your money you go to billing and remove your bank account from there if they keep spending it. Solution: 2 Go to privacy and there is a setting which can be changed to adult, teen or child change it to child if they are
4 - 10 teen is 13 - 18 adult is 18+. Did this resolve your problem?

-Trial