Board Thread:Questions and Answers/@comment-27744487-20170206233642/@comment-5956954-20170206234301

Most of your questions are answered here.

It is normal for the game to remember things. To rename, complete the True Pacifist Route and do a true reset which is completely resetting the game within the game. The modified TPE is what happens after a Genocide Route.

I hate spoiling people because it ruins Undertale, but hope this helps.