What are the options for reversing a migration?

[Stephen Roughley]

Hello,

About 6 months ago we made the decision to migrate from one Jira Cloud instance owned by one organisation to another Jira Cloud instance owned by another organisation. This was to take advantage of consolidated billing and management. During the migration we moved 3 years of history across into the new instance and we have continued to build on that data there. We are now faced with reversing this migration after 6 months of running on the new instance.

Ideally we would like to migrate everything that has happened during the last 6 months back into the original instance but no idea if this is supported or even advisable and I am struggling to find any helpful guidance on this scenario.

Any help is welcome!

Thank you,

Ste

[Blue Ridge Consultants · Accepted solution]

Hey Stephen,

Unfortunately, there is no way to perform a delta currently (without writing some complicated custom API scripts).  I would start by trying to figure out what has changed in the last 6 months to see what would need to be fully migrated back.  From there if you have premium on the old instance you can spin off a sandbox and test migrations there.  You would have to fully delete the old project and migrate it again with all data from the current prod.  I'm sure you are already familiar with the cloud-to-cloud migration tool but here is a link:

https://support.atlassian.com/migration/docs/perform-a-cloud-to-cloud-migration-for-jira/

My biggest concern for doing work like this would be app data.  The c2c tool doesn't currently support many apps so if any ended up being used on the newer instance there could be data loss re-migrating back.

[Stephen Roughley]

This is actually really helpful! We are happy to go an API route but also deleting the project in the old org is also an option we'll explore. Thank you!

[Nic Brough -Adaptavist-]

Welcome to the Atlassian Community!

The best you can do here is start again.  Create a new, empty Jira Software site, take a backup of the current one, import that into the new Jira site, and then delete all the projects you don't need from it.  And, of course, delete all the projects you have migrated from the current source Jira.