Lets say I create a map in 1.11 and play around in it, then sometime later I load up the same map in 1.11 forge (for this example there are no mods, just forge alone) and run that for a while. After some time of playing with forge I go back to vanilla 1.11 (just using 1.11 as an example, I'd assume it's the same with all versions) would I corrupt anything?
The reason I ask is because I'd like to install mods like inventory tweaks and a Minimap, but I don't want to corrupt anything and want to be sure that I can swap between Vanilla and a forge profile with mods that don't add any new blocks/mobs (like damage indicators, inventory tweaks, ect.) and not corrupt anything.