Keep in mind that the Main Drum Loop section loops.
What are the implications? Does that mean no intro or outro fills?
The DOP, OPB & OPBk songs are one-press which means they do not include multi-parts i.e., Transition Fills, Drum Fills, Accent Hits, Intros or Outros like the default songs in genre folders (Blues, Rock, Metal, etc). The implication is that when you move the meat and potatoes to the Main Drum Loop section, you will have to time the ending of your song to do the double-tap. If you don’t the song will loop over and over until you either pause or end it.