I had several charts that I have around for a long time which worked
famously. When the dataset values were NULL (not ZERO) the line stopped.
This is what I want to happen.

Recently I made some minor changes in the chart size and position on the
worksheet, but did NOT alter the data source or chart type. Now when the
dataset values are NULL the chart treats them as ZEROs and the trace goes to
zero instead of just stopping.

What do I need to do to "correct" this?

Thank you in advance for your input and expertise.

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MJ