New version of Minecraft keeps crashing when trying to sync Xbox One world to Windows 10 through the beta

When the better together beta became available to the Xbox One my first thought was to sync the world I've been working on like 5-6 year with my friends. That world is massive & is 199.5 MB. However, when we try to sync it, the game on the Xbox One crashes without being able to sync the world fully.
I'm not sure if it's the world size or the server might still be a bit unstable to support that
I'm hoping for some answer here