Right now you can push a Feature and associated stories to VSTS but if you delete a story in VSTS you have to manually delete in Aha. We need:
1) any story delete in VSTS to be automatically deleted in Aha
2) any story added in VSTS to a Feature that is linked to Aha to be automatically added to Aha associated with that same feature.
Thank you for the request. In regards to deleting records across different tools, we make it a rule to never delete records between tools -- because this can cause very harmful unintended consequences (particularly when weighing this against the effort required to manually delete records).
In regards to the second component relating to adding VSTS stories to Aha! features, we have launched enhanced VSTS and TFS integrations that now makes this possible. You can now import newly created work items along with several other new capabilities including the ability to: