How can I create a filter that only returns the release names and dates for the Cross Project Release Name and Project specific releases, not all the issue linked to the releases, but just how the releases has been linked together?
This would be used in a common dashboard, so people could the the relationship between Jira and Portfolio without having to be in the specific portfolio plan.
Alternatively, it would be great if Project users could see what CPR their Project Release is linked to.
A Cross-Project Release (CPR) only exists within the Portfolio and not in Jira. When you create a CPR in Portfolio Live Plans, a CPR and project-specific releases with the same name are created in the project you have selected. The CPR will stay within Portfolio and will never be committed to Jira, while the project-specific releases can be committed back to Jira.
You can find out more at https://confluence.atlassian.com/jiraportfolioserver031/creating-and-configuring-cross-project-releases-970603771.html
Given that CPRs are not committed to Jira, it is not possible to fetch a CPR via a filter in Jira. You can use the fix-version field of issues to build a dashboard that shows information about project-specific releases. To view any information regarding a CPR, the user has to go into the Portfolio plan.
I hope this helps. Let us know if you have any further questions.
Portfolio for Jira Team