My game crashed and when i went to load back up the world i was in was gone so i went through the restore instructions from the wiki https://minecraft.gamepedia.com/Tutorials/Recover_corrupted_saved_world_data
And after i go through all the steps the new world created to load the level.dat/level.dat_old and session lock from the old save i am trying to bring back, the new copy no longer appears as a world to load in the start menu
Thank you for your report!
We're actually already tracking this issue in MC-115237, so I've resolved and linked this ticket as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
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