ERP Next Cloud - Upgrade

Hello,

We are looking into purchasing ERPNext’s cloud services. I read the how-to blog on upgrading from version 12 to 13 through the cloud page, but it also mentions there is no straightforward way for major upgrades. Has anyone used the method mentioned in the article below to upgrade from version 10 to 11 and 11 to 12?

https://frappecloud.com/docs/sites/version-upgrade

Regards,