rollbacks are deleting words on ps4

I died in ruins so I rollbacked a world and there where like 5 or more loading screens. I waited few minutes and when the game loaded it gave me option to choose new character. Rollbacks on ps4 takes so much time... This is not the first time this happned to my world. And no I didnt click regenerate world. If u want to try this too just turn on ps4 start some world die and try to rollback the world.