the game need to runs once till the title screen on the new profile before stopping emulation. make you are selecting mange save from the profiles setting for each profile.
its the very first post on this thread you can google the level you want as a hexdecimal and plug it in to the level line by replacing the 0A or just the A. Ex: lvl10 in hex is A, lvl50 is 32 and lvl 100 is 64