I had an smp with my friends , and it was alot of fun . and it was cracked aswell. but all my cracked friends left and we decided to make the server premium so that we could see our skins , When we did this it wiped our advancement data , we had the world and our inventory but our advancements were gone
we decided to turn it back to cracked so that we could get our advancements back , which completely wiped all of our inventories , our world was fine but our inventory was gone , we turned it back to premium where we got out loot back but our advancements were still broken
If this is an unfixable bug please make a warning that it might screw up some data , i really don't want anything to experience something like this