There has been a constant demand for the ability to include issues from different projects in the release notes. With the recent enhancements, that is now possible. Before, the JQL in templates did not include the project parameter & ARN would implicitly apply project filter based on project association. Now, the JQL in templates include project parameter explicitly. If you want to fetch issues from other projects just update the project filter accordingly.
For example:
Older approach: JQL{issueType=story and fixVersion='[versionName]'}
New approach: JQL{project=[projectId] and issueType=story and fixVersion='[versionName]'} - In this query, [projectId] will be replaced by the project id in whose context ARN pages were opened.
If you'd like to fetch data from specific project: JQL{project="PROJ" and issueType=story and fixVersion='[versionName]'} - In this query, irrespective of the project from whose context ARN pages are opened results will be retrieved from the specific project 'PROJ'.
If you'd like to fetch data from multiple projects: JQL{project in ("PROJ","PROJ-1") and issueType=story and fixVersion='[versionName]'} - In this query, irrespective of the project from whose context ARN pages are opened results will be retrieved from the 'PROJ' & 'PROJ-1' projects. In this case, you need to make sure that the same version name is used across all the referred projects for this query to work.