How can i transfer my marketplace items back from my new microsoft account to my old one

On my new xbox I've redeemed my old account but I've changed the gamertag, I'm wanting to transfer games ext from my old xbox to the new one but the data is owned by my old gamertag can I still transfer from the old name to my new one ????

On my new xbox I've redeemed my old account but I've changed the gamertag, I'm wanting to transfer games ext from my old xbox to the new one but the data is owned by my old gamertag can I still transfer from the old gamertag to my new one ??

I did not verify my emali on that activision account and Can i Make a new Microsoft account and transfer data From my old Microsoft account to my new account?

There isn't a way to transfer your old items/account to your new Microsoft Account. What do you mean when you say you transferred your security settings from your old account to a new account? You can change the email/info of your Microsoft Account,
but your old Profile is going to be tied to that old Microsoft Account, and there are no ways to merge or migrate that data.

I had a similar issue after transferring from my old Xbox One to my new X. I ended up removing my account from the X and then adding it back in to resolve the issue. Everything was there after I added my account back to the system.