[Zubersoft]

Where are you looking for the changes? Rotating and cropping are applied only in MobileSheets - the original file is not modified. If you want to save changes like that to the original file, you'll have to export the file by long pressing the song on the library screen, then tapping Share->Export files. This will output a PDF with the cropping/rotation/annotations/etc. Alternatively, the next update is adding a redesigned page ordering feature along with an image correction feature - that would let you modify the original PDF, apply cropping and rotation to it, etc, and then MobileSheets will use the modified PDF.

Mike