Avoid Breaking Existing Maps:
when the famous “return bug” was fixed in patch 1.24, tons of
maps broke (including DotA). Fortunately, Blizzard gave us new functions to transition our maps,
but the change still left its mark. Some of the community became divided because players
wouldn’t be able to play some of their favorite maps without down-patching (i.e. if the author was
inactive). On a similar note, many map-makers currently use an extended editor
“JassNewGenPack” to create their maps. It simply adds editor functionality for things that are
already supported by Warcraft 3. If you ever re-compile the editor, we ask that you keep
‘worldedit121.exe’ available in order for people to transition their maps.