Hello,
After deletion of the Confluence link within JIRA issue (from the JIRA side, not Confluence side), in the history of the issue there is contained some ID:

However this ID is not the page ID used in Confluence, moreover it looks like some internal JIRA ID stored in the DB for the linked Confluence page.
The "problem" here is, that I'm not sure how to find the page by the given ID in Confluence.
This might happen e.g. when page link was accidentally deleted directly from JIRA issue.
Is there some way how to find the Confluence page by the mentioned ID?