they must mean the main final level, that you go in with normal play. if you play a time trial run of the level, it doesnt play the remix.
the only games from the e-shop that have got updates so far are VC and 3D Classics
i may make a video showing the normal level and the time trial later...
time trial and normal game differences !
Yeah, they are saying that the remixed music played normally for them when they got to the Final Level in the normal game. When I played through it though, it was the normal version of the song, not the remix, until I decided to fool around and backtrack. When I later went to record the song, I used the Time Trial as it was a faster way to the Final Level, and as you stated, the Time Trial requires backtracking.