Have had a similar issue in my guild’s raids as well. Wehn swapping from normal to heroic for either progression or on farm heroics, it won’t let us change cause multiple people get the “already saved to heroic” bug when they obviously haven’t. Sometimes up to 5 people have to leave the raid instance before we can successfully swap it to heroic. This easily wastes a good 5-10 minites each time we have to swap.