1.0 did this; 2.0 does not.
As a user I have to manually add the mapping between the URL field for an Aha! record and the Aha! Reference field for the JIRA record.
For Releases we automatically map the URL to the description field.
For Features/Requirements we should automatically map to the Aha! Reference field if it exists.
Thank you for the idea. Given the low volume of support for this idea, we do not have plans to make updates in this area at this time. As noted in the idea it is currently possible to manually add this mapping. We hope that helps!