Hi @Unnikrishnan-DK - What you are observing is the OOTB feature of AEM,
where it externalizes the url's within the XF HTML when exported to
target. This should not cause any issue with the Target use cases. If
the malformed url http://example.comnull is the concern, try updating
the href value in your HTML to "href=#". For some reason if you don't
want externalization to happen, then revert your custom changes and
custom domain from the "Day CQ Link Externalizer" OSGI config at
location
"/syste...