why in the carpet .minecraft bedrock My new worlds are not there, only the old ones, the...

Are you talking about a Minecraft world? Also, what version [Xbox one(the old one) or bedrock (the latest one with cross platform)]?. Usually if you're connected to Xbox live, all worlds sync up to the cloud, if you're playing on Minecraft Bedrock edition,
when you click play, there should be an option at the bottom to sync old worlds.

Together with Mojang support I found out the problem why I do not manage to import my saved worlds on my Xbox One X in the online purchased version of Minecraft.

The Minecraft Xbox One version that you can buy online in the Microsoft store is a different version than the Minecraft Xbox One version you buy in the store (DVD). The online version is the so-called Minecraft (bedrock code base on xbox one) version.

To import the saved worlds, you first need to export the worlds on the Xbox 360 Minecraft version, import them into the Minecraft Xbox One Edtion import and then import old worlds into the Minecraft bedrock codebase version. (Minecraft Xbox 360 -> Minecraft
Xbox One Edtion -> Minecraft Xbox bedrock codebase).

You end up with a version that you do not use, but you can then sell it via e-bay to fellow gamers who have the same problem.

So it is possible and fortunately not as Microsoft indicated earlier that the worlds would be lost.

You can use the Minecraft Realms standard or try the steps below first when transferring worlds.

In Minecraft (Bedrock Version), select the Sync Old Worlds button at the bottom of the worlds list in the Play menu. This finds any worlds on the device from the Minecraft: PS4 Edition and displays them below the button.

Select any of the worlds that are displayed to convert it to the Bedrock edition.

After conversion, the world will show up above the Sync Old Worlds button, along with the rest of your Bedrock worlds.

Hey Jeff,

The way to do it in the New Minecraft (Bedrock Edition) Is to sign into the profile that created the world on the Xbox One Edition and under the Worlds tab like Nikolaus81 mentioned, you might need to select "Sync Old Worlds" in
order to see them in the list though.

You can only transfer your world from Minecraft 360 Edition to Minecraft One Edition to (new) Minecraft.

Which Minecraft version do you use? For example, Minecraft 360 Edition in (new) Minecraft is not possible.

Only Minecraft 360 Edition to Minecraft One Edition and Minecraft One Edition to
(new) Minecraft

Minecraft 360 Edition and Minecraft One Edition are out of support and now the Legacy Editions. New Minecraft is the Bedrock Edition