If a hasan route is corroborated so the report is sahih li-ghayrihi, what happens to the first narrator’s general precision grade?

Hasan li-Dhatihi, Sahih li-Ghayrihi, and al-Tirmidhi’s Composite Terms

• The first narrator now necessarily meets intrinsic sahih’s high precision
• His memory does not automatically become fully precise
• Every subsequent report by this narrator is sahih li-ghayrihi without review
• The first chain’s intrinsic hasan assessment and record cease to exist