Hi @Harshanand Wankhede ,
As per my knowledge, I'm afraid OOTB it is impossible to reroute/redirect link to the new url after migration. You have to update the link manually.
You can post feedback on SharePoint feedback site: https://feedbackportal.microsoft.com/feedback/forum/06735c62-321c-ec11-b6e7-0022481f8472.
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