Minecraft Forums

I started a minecraft world with biomes o plenty, made a few islands with the new blocks it ads, along side regular block types. I accidentaly loaded the world with my regular profile instead of Forge, and all the blocks i placed from the mod were dissapeared, this has happened to me before, obviously if im not using the mods it cant be there, i get that. so I just closed minecraft and opened it again then loaded the map with my Forge profile, my inventory now has the blocks i put in it, but all the islands are still floating blocks from the regular world, and still are missing all the ones i put in, making things look ridiculous, and discouraging me from putting any further work into the map or trying to put all the blocks back. Is there a way to get the structures to have all there blocks again? or is it glitched permanently? because ive switched back before and all the blocks from the mod reappeared. but not now. any help would be amazing