one-sheet printout vs 2-page reference file

I am having an issue with a 2 page chart for a DTP70 that was combined into a single chart. I have a .txt for a reference file that is requiring two pages when I scan it. It will scan the first half of the sheet and ask for the second sheet. What do I need to modify in the reference file to make the DTP70 see this as a single chart? Many thanks, Randy Norian