Recently our MC server had become corrupted due to some, “misinformation”, regarding our storage so we had to restore from a backup. Currently everything is doing alright, but we are trying to fix the advancements, as currently, they were somewhat wiped from most players. I have almost no experience in how to even remotely touch programming and .JSON, so I will need a lot of patience with this. Right now I am trying to take the corrupted file, the file from the day before, the file from right before, and the file after the crash and splice together all the values to get as many of the players advancements back. Each players access to their advancment is determined mainly by a true/false, so how would I combine the files so that all true values from before and after remain, as well as any false values?

I attempted the suggestion of doing parsing from our resident dev, but unfortunately I have no idea how to do it or execute it, and they are currently unavailible. I am mainly using this as a learning experience.