As a user, I want to be able to export information from Advanced Roadmaps for Jira (previously Portfolio for Jira)

It would be very useful to be able to export information related to the Advanced Roadmaps for Jira.

For example, it would be useful to allow the export of "Child issues" linked to Parents (regular issue types).

Also, include the possibility to add Xporter's button to the Advanced Roadmaps screen.