What is the problem?
With Portfolio for JIRA you can commit issue changes made in Portfolio to JIRA. You have an interface to see what changes will be transferred to JIRA.
You can see what issues were changed, but to see what exactly was changed in an issue you need to choose each issue separately. It may take time.
Issue release change is a quite important information. That's why we created a special interface, where you may see in one glance which issues will change their release in JIRA after change commitment.