Saving an address is for convenience, but it doesn't mean you won't double or triple check the details.
The best option is even copying the receiving address at anytime we want to send coins to that address, because cross checking is not a guarantee method. It is better we delete them and copy and paste whenever we need them to avoid any mistake. According to a phrase, prevention is better than cure. Or if I would have known.
This thread is just like an early warning which we need to take precautions.