Combining Databases with Attachements

[michael harris]

We currently have a JIRA Cloud instance that has been in use for several months with a fair many tickets, all with several attachments each. Our team wants to combine this database with a rather large XML backup of an older JIRA Server database that was shut down a few months ago. This older instance had identical project names, fields and screens. It also had a very large number of attachments. It is necessary that all attachments be available for all tickets. There is overlap in the issue keys between the old database and the new one.

This is my big problem (if I'm understanding the documentation correctly):

- Importing XML backups always overwrites all the information in the database. If we import the backup from the old system, it will overwrite the existing database and destroy all of the tickets that have been created since the Cloud instance came into use. Similarly, if we created a backup of our newer tickets and attempted to import them after using the backup from the old site, all of the old data would be overwritten.

- If we migrate the new tickets to a different project before importing, this project will also be deleted when we import the backup.

- If we export the current issues to CSV to re-import after running the system restore, we will lose all attachments.

So, is there any way that I can do this and keep all attachments from BOTH instances? Any help would be greatly appreciated.