[Avodah] Issur Karet removed

[Ben Waxman via Avodah]

Someone in a Facebook discussion left me with a question. Going to Har 
Habayit is justified based on new information, ya'ani we now possess 
information which previous generations didn't have. Therefore we can 
certify that certain areas on Har Habayit are safe (yes, I understand 
that not everyone agrees with this position).

Are there any other examples of an issur karet or a potential issur 
karet (or even a  stam issur lav) that we now permit because we can 
determine where the issur actually is?

Ben