[Zubersoft]

No, you can load all of your existing songs into a setlist (Setlists tab->New->tap the icon with two arrows), load that setlist, enter the cropping editor (second icon, bottom left of overlay->Crop), tap the three dots at the top right, then Settings, change it to apply cropping to all pages in the setlist, then tap "Clear" and it will clear the cropping for every song in your entire library. You'd have to go back in and recrop individual songs if you want them cropped later though.

Mike