Copy chart with dynamic named ranges

[skiingrudder]

I have created a chart on a worksheet with links to named ranges scoped to that worksheet. When I copy the sheet to a new sheet, the formulas for the series are changed to static formulas.

This is a formula from the chart on the original sheet: =SERIES(Original!$A$2,Original!XaxisLabels,Original!mydata,1) where XaxisLabels and mydata are named ranges.

After the sheet is copied, this is the formula from the copied sheet: =SERIES('Original (2)'!$A$2,'Original (2)'!$B$1:$C$1,'Original (2)'!$B$2:$C$2,1)

Any idea why the new formulas do not contain named ranges?