remain, rename

Remain or remain means to stay behind or to continue in the same place, state or condition--
The children will remain at home until they start school.
Please remain seated until your name is called.

Remain also means to be left over; to be left to be done--
Pack up the sandwiches that remain; we'll have them for lunch tomorrow.
A few little jobs remain; we can do them tomorrow.

Rename or rename means to give a new title or designation to--
Council plans to rename the highway.
We got this dog from the pound; we plan to rename him.

Now that you know that, you can say--
"If you rename the dog, he may remain confused for a while."