We have acquired a company who also uses Jira Cloud Premium. Over time, we plan to migrate some of the projects in their instance to our larger instance. In the short term is it possible to link issues from their instance into our instance?
This is what I found, As a Jira administrator, you can activate issue linking to let your team create links between relevant issues across all Jira applications on your site. Here's the documentation for your reference: https://support.atlassian.com/jira-cloud-administration/docs/configure-issue-linking/
The documentation that states
You can't do this in the new issue view just yet. Click the issue key to go to the full-page view (if you're not already there) then click through to the old issue view at the top-right to complete this process.
Your Jira administrator will first need to configure fully reciprocal application links between your two Jira sites. To create a link to another Jira site:
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