I did this last time and just did it again.
The thread I read about said that you should take off the added lines once it’s fixed and I did last time, is that not necessary? It’s safe to just leave it in?
It is safe to just leave it in, and actually faster. If FR ever goes down check one of those is it just me sites and if it is just delete the 2 lines. Good as gold. There is absolutely no risk if JimRob agrees to post a warning he is going to touch DNS records and makes a post. Otherwise there is less than negligible risk for anyone not a mod or higher.