[jQuery] tablesorter with .toggle sorts hidden row - any way to prevent this?

Reposting since no response on original post. I have a table where every other row is collapsed (using .toggle). I want to sort on the visible rows, but the sort, of course, sorts the hidden rows as well...the result is that the hidden rows may not longer be associated with the same "parent" row

[jQuery] Sort tables with hidden (.accordian collapsed) rows

I have a table where every other row is collapsed (using .toggle). I want to sort on the visible rows, but the sort, of course, sorts the hidden rows as well...the result is that the hidden rows may not longer be associated with the same "parent" row. Here is a snippet: tortable column 1sor