I have been playing for many hours in the nether making ice bridges to link portals, once I finish, I go to the overworld for a moment and when I return to the nether all my progress and my hours of play went to waste, all the ice that I put was replaced by the netherbricks already set by default and everything mine was also replaced but my pickaxe still with damage and also loss my ice
PLAYED IN XBOX ONE V:1.12.0