It is me, Nathan, who you spoke with in OneDrive support chat. I have added my vote to this :)
My Vote is added :)
30 votes3 comments · OneDrive on Windows » Windows Store App (Xbox, PC, Mobile, Hololens, Surface Hub) · Flag idea as inappropriate… · Admin →
They save to your account and saves to their servers under your profile. However, they don't save downloaded games you have installed to the cloud.
If they are not downloaded to the xbox, unless you have good internet connection, it won't play as expected. This could contribute to game problems.
Hey there, Mat
Providing you have not signed into Xbox live before, on the Microsoft Account linked to your mobile phone, you can contact Xbox support and they will be able to move your gamertag over to the other Microsoft Account for you.
You can contact them here: https://support.xbox.com/contact-us
This really, if it was a suggestion, would be an Xbox suggestion on their uservoice page here: https://xbox.uservoice.com, not a suggestion on this site, as they have no influence for Xbox services and features. They only have influence about OneDrive for Xbox One and 360.
Hope this helps,
Hey there, Richard.
I would advise contacting support. You can reach the OneDrive forums here: http://answers.microsoft.com/en-us/onedrive
Or Xbox forums here: http://forums.xbox.com/xbox_support/xbox_one_support/f/4274.aspx
This would be the best way for you to get help regarding this problem. From there, the community can further assist you.