Service Portal Knowledge Article opens with “Record not found” after copying portal and configuring

[manishkrpal]

• I copied an existing working Service Portal to create a new portal
• Configured the following for the new portal by creating below records:
  • AI Search Sources
  • AI Search Profile
  • Search Application
• Knowledge articles are indexed and searchable
• Search results appear correctly
• Issue occurs only when opening the Knowledge article from search results
  
  When I search and open a Knowledge article from the old portal, it opens correctly with url 
  ?id=kb_article &sysparm_article=KBXXXX &table=kb_knowledge.
  

  In the new portal, search results appear, but when I click a Knowledge article, it shows “Record not found”  with url  ?id=form &table=kb_knowledge &sys_id=undefined