[tor-relays] Change of 1st Seen date exit

Why has by exit 51AE5656C81CD417479253A6363A123A007A2233, over two years old has its first seen dates set to three days ago? But its consensus weight is 40,000, all flags in place and working as before so I am not sure what the less than two weeks old exit warning is about and why its says it is new. I have not changed anything or fingerprint. Gerry