Revert "Fixed undoing after saving makes negative changes"
Revert "Fixed undoing after saving makes negative changes"

This reverts commit aba8dea7658d18fe1e819d1eb149067dba19e5f0.

OniOniOn-/MCEdit-Unified,gpmidi/MCEdit-Unified,skinny121/MCEdit-TallWorlds,OniOniOn-/MCEdit-Unified,violine1101/MCEdit-Unified,DragonQuiz/MCEdit-Unified,skinny121/MCEdit-Unified,fhfuih/MCEdit-Unified,gpmidi/MCEdit-Unified,violine1101/MCEdit-Unified,DragonQuiz/MCEdit-Unified,DragonQuiz/MCEdit-Unified,skinny121/MCEdit-Unified,fhfuih/MCEdit-Unified,Khroki/MCEdit-Unified,skinny121/MCEdit-TallWorlds,fhfuih/MCEdit-Unified,Khroki/MCEdit-Unified,OniOniOn-/MCEdit-Unified,Khroki/MCEdit-Unified,skinny121/MCEdit-TallWorlds,Neui/MCEdit-Unified,gpmidi/MCEdit-Unified,Neui/MCEdit-Unified,Neui/MCEdit-Unified