Jon,
As I understand, some lines of data can be completely empty, and you'd like the rest of the data to "move up", rather than displaying a blank line, correct?
There are many ways to do this, and it depends mostly on how do you display your lines of data. And so, we need some more information. How are you displaying the data lines? Are you using a data selection or text box with a Repeat? Are you using PressTalk to loop through the lines? Is it one huge data selection taht selects many rows and you'd like the empty lines to be "skipped"?
Regards,
Raphaël Lalonde Lefebvre