The entire worksheet was created in Design View - so all the script written was done automatically by LiveCycle - The tables all exist with a single row to start, and rows have the ability to be added dynamically. As far as the scripts referencing header rows, I do notice that the header rows in each table are all named the same ("header row") in the script - could this have caused a glitch? In the hierarchy chart, they are separated out by a bracketed number, so it seems to realize they are separate. But let me try renaming each one separately...
Well that worked! Its the first time I've been able to Extend the document without extra rows on this version of the worksheet! So all I did for future users, was to make sure each Header Row was specifically named differently - so HeaderRow1, HeaderRow2, etc.
Thank you so much!