At the moment when a User Macro contain the following:

<p><ac:link><ri:page ri:content-title="Welcome to Confluence" /></ac:link></p>

The resulting macro will translate the above, to a link as below:

When a user follows the link it leads to an empty page. The user can then add content to the page, this page remains accessible by the above link until this page is renamed.

When the page is renamed, the above link will lead to an empty page again with the same title. This behaviour means that page links generated by User Macros, are not dynamic with every page rename. 

The Ask:

Allow page links generated through User Macros to be dynamic with every page rename.