Our Mobility for Jira app can be used for Jira Server, Datacenter and Cloud. Since the app does not store any data on your server the process of migrating between different deployment types is straightforward and does not require any data migration.
Here are the steps for a successful migration to Jira Cloud:
Install the Mobility for Jira add-on on your Jira Cloud system
Accept the Free Trial
Mobile users can now add this new account on their mobile device and enter your new URL
Mobile users should go to Profile > Notifications and set their preferred Push Notification preferences
The Mobility for Jira Add-on does not store any of your data. The only exception are Push Notification settings that need to be re-entered by your mobile end users.