I have Line charts on various sheets. The charts are identical in size.
There are 12 items graphed on each chart. However, the legend on each of
the charts seems to be displaying different numbers of charted items. I'm
not sure how to explain this clearly.

On one chart's legend, it might show 12 items (three columns with four items
each), which is correct. Another chart's legend may only show 2 columns
totally only eight items (it should be 12). I even have one chart's legend
showing only 4 items (as if it is only one column displaying).

I can't figure out what could be different from one legend to the next.

Any ideas?

Thanks,
Paul