Copy/Paste Chart to Sheet2, but Data is Still referenced from Sheet1. How do I update it?

I have two almost identical worksheets. Sheet 1 & Sheet 2.
I want to make a chart for each of them.
I want to keep Chart 1 on Sheet 1. And I want to keep Chart 2 on Sheet 2.
The charts are exactly the same, but very tedious.
I just finished Chart 1 (on Sheet1), and want to copy it over to Sheet2, and just dynamically update all of the data on the 2nd chart, to reflect Sheet 2.

Does someone more savvy than I know how to achieve this magnificent feat?

Much appreciated!
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Reworded:
I have Data+Chart on Sheet1.
If I copy everything to Sheet2, how do easily I make the new chart on Sheet2 reference the data on Sheet2 (instead of Sheet1)?
Thanks!