Unable to do a save as the rule after pega upgrade from 8.4.3 to 8.6.4

Unable to do a save as the rule after pega upgrade from 8.4.3 to 8.6.4.

@NeeharikaA6146

Could you please revalidate and save this rule once?

@P.Siva.Praveen it’s working now. Our load balancer is not mapped to the upgraded environment. So when we logged in with IP, it started working for us.