Enable the Atlassian Migration Assistant in your server instance global administration

Once you updated to the latest Atlassian Migration Assistant in Server, you can use it to

Assess and prepare your apps

The Comala Publishing app is not migrated and must be installed separately in your cloud site

Prepare and Connect to your Cloud site

You can link your chosen Cloud site at this step.  Simply select your existing Cloud site from the dropdown options. They must be linked to you as a site administrator

Migrate your data

This includes users, groups and content data

The Atlassian Migration assistant in the Vendor App checks will display details of any page with page restrictions that will prevent migration of the Comala Publishing publishing status. These page restrictions will need to be removed prior to migration.