Copy a group of Chart tabs

I have a group of chart tabs, 4 for each month, each tab contains multiple
charts (between 2 and 12 per tab). The series data in the charts comes from
one worksheet tab (in this case Sep09)

At the start of a new month I want to copy the group of 5 tabs and rename
them (eg Oct09), however when I do this most of the charts still refer back
to the Sep09 tab. I then have to go through all of the charts and manually
change the sheet reference in the series data ranges.

Is there a way to avoid all of this manual intervention?

I am using Excel 2007.


I am using Excel 2007.