Xbox one Add-ons

It was claimed that my DLC from the old Xbox one edition will transfer over to the new update. That so far has been a false statement for me because I don’t have any of them available they all have the little lock symbol except one! Which I never even bought I have access to a texture pack I never bought, it the ones I did buy are locked. I want access to all my other texture packs, mash up packs etc.