Thanks guys, you were right.
Since it returns to "0" on all of the other songbook entries, I don't see a major downside except for new work. The only time I am at risk is when saving new songs right after a transposed one, and don't reset it. Is there anything I am not seeing?
_________________________
pa4X 76 ,SX900, Audya 76,Yamaha S970 , vArranger, Hammond SK1, Ketron SD40, Centerpoint Space Station, Bose compact