Currently, when a link is created from Confluence to a JIRA Issue, the link is also automatically created from the JIRA Issue to the Confluence page. However, once the link is deleted from the Confluence side, the link still exists in the JIRA side.

For example :

1. Confluence page 'A' links to JIRA Issue 'B'
2. In Issue B, it is shown that it is mentioned in page A
3. The link from page A to Issue B is deleted from the Confluence side
4. However, in Issue B it is still shown that it is mentioned in page A

This might cause some confusion among the users. It will be useful to remove the backling (the 'mentioned in' link) when the original link is deleted.