Minecraft Bedrock Worlds.

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.

Is it possible to shift worlds in minecraft bedrock from ps4 to xbox one?

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.

Busquei ajuda nos fóruns da Mojang sobre o problema. Aqui está o link caso queira acompanhar ou ajudar.

https://www.minecraftforum.net/forums/support/minecraft-bedrock-support/2979781-unable-to-join-the-world-xbox-one-bedrock-edition

[Translation-I sought help in Mojang's forums about the problem. Here is the link if you want to follow or help.

https://www.minecraftforum.net/forums/support/minecraft-bedrock-support/2979781-unable-to-join-the-world-xbox-one-bedrock-edition]

Thank you for contact us! I'm Anderson, an Independent Consultant and a Microsoft user like you.

good night

In Minecraft (Bedrock version), select the Sync Ancient Worlds button at the bottom of the world list in the game menu. ...

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