When you apply a conditional tag by rows, RH 5 generates
output with empty cells in the tagged rows. This requires a
workaround, manually applying the condition inside the <tr>
tag for each row to be excluded.
In RH 6, when you apply a condition by rows, RH applies tags
to each cell (but not in the <tr> tag), and the output
generator somehow knows to omit the row. That's progress.
You may be thinking what I'm thinking, but I'll leave that to
the Adobe developers.