IOS 7.0.6 iPad iRealPro

Just recently have set number of choruses on a tune to say 8 but find having started tune setting reverts back to original setting of say 3 or 5 choruses. Have reset iPad which seemed to cure problem but it does recur intermittently. Is it me or a glitch?
Have searched FAQ but didn't come up with anything. Many thanks to anyone who can explain.
richardb