Does Minecraft Preview saves on normal Minecraft when the update is out

Hi there Sariah, my name is Gerardo, and I'm an Xbox player. I'll be happy to assist you with any questions or concerns you may have.

I recommend contacting the dedicated Minecraft support team directly through the following link to confirm whether the world saves in regular Minecraft after Minecraft Preview ends or not, so that you are completely sure:

https://help.minecraft.net/hc/requests/new

I appreciate your understanding and wish you good luck!

Kind regards,
Gerardo

Are any of your friends in the "preview program" and have minecraft dowloaded through the preview program? And the other does not? If that is the case whomever is in the preview program must get out of the minecraft beta or alpha, then download the regular
version. You cannot play together otherwise.

The "outdated client" error only comes up when a player is trying to join a world that is in the Xbox Insider Minecraft Beta preview ring. That's a mouthful, I know. This version of Minecraft is the Bedrock/W10 version but it just gives your Minecraft updates
more often.

Two scenarios could be true. Your friend is the one on the newer update provider through the Insider Program, or you are. If its your friend, they need to deselect the Minecraft preview ring and "revert" to play with you. This temporarily locks them out
of any world that is saved in a newer update until the public version receives that update. If you're the one in it, you need to deselect and "revert." You could also try looking up the "Xbox Insider Hub," joining it, and then joining the Minecraft beta in
order to play with your friend.

https://support.xbox.com/en-US/xbox-one/console/xbox-insider-program

He is an update with some screenshots.

www.mojang.com/.../preview-of-next-minecraft-xbox-update

here is a link to what was shown and said about the update...

www.oxm.co.uk/.../minecraft-xbox-360-update-9-is-out-now-but-watch-out-for-save-loading-bugs