When I edit a Mario VS Luigi level and put it in for testing, it just simply ignores that it was edited and uses the original one, I thought I didn't save it properly but in the editor its the edited one but when I test it its not... If someone can help with this thanks

did you edit the "Download Play" levels or the "2 Cards" levels

So as it always goes, few minutes after I posted this I found out you need to press both the "Multiplayer Narc" buttons on the NSMB Tools (Not download play friendly mode, that will break the multiplayer) either way the amount of stuff that cause a Mario VS Luigi level to CRASH is crazy, you can barely put anything!