MS Excel 2007
I've somehow managed to display only two data series on my line chart. They
still display in the data table. How did this happen? More importantly, how
do I reverse it. I don't want to recreate chart.

I see the data series not plotted on chart in the Chart Elements and when I
select the series, the source data is highlighted; it's in the data table.
How do I make it visible?
Thanks!
Miriam