Hi. I am trying to write an original piano part into a song. I used the notation mode to put the notes in that I wanted played. It seemed to work. But when I opened the song today to work on it more, the part was gone. I have tried several times to enter specific parts, for other songs and other instruments, only to have more work meet the same fate. What am I doing wrong? It's driving me crazy.

BTW there is a reason for my user name so I need the for Dummies version. Thanks

Oh, and piano roll attempt failed as well.