Save file changes into another save file

Just to make my emotionally charged messg more clear: I deleted the corrupted file, it kept opening into another save file I used, no error messages occur after leaving the corrupt save file, it just kept loading into the older save file (a complete other one, the perfect world I keep mentioning is another save file I didn't play in today, other than use 'save as' on.) I gave the new save file a new name as a possibility prompted by the game, but when I tried to save after building, I got save mssg #30. Tried saving in the world map, that worked without an issue. Went back to main menu, tried to open the last save file (it was there but under a weird generic name like save file 0000034 or something alike) and it kept opening the save file I actually played gameplay in last. So not even the one I opened (the perfect world I've created). I deleted the old one because I was worried it would corrupt my perfect save file, so unfortunately I can't send you any useful screenshots now. I'm so sorry!