Conditional Formatting Question -- Bug?

Oct 6, 2013 at 12:10 AM
I used EPPlus to open an existing xlsm file -- without changing anything -- I did a saveas....
I expected to have a complete copy of the existing xlsm file with a new name.
Most of the data was copied without an issue; however some of the fields which had conditional formatting on them have been changed. Wondering why this occurred since nothing was changed?
I did check the actual sheet xml of both versions and discovered this difference between the two versions (only showing two fields difference -- but change happen on eight fields)
What shows in the existing xlsm for fields F18 and F19
<c r="F18" s="328">
<f t="shared" si="4" />
<v>20430</v>
</c>
<c r="F19" s="328">
<f t="shared" si="4" />
<v>21485</v>
</c>
What shows in the SaveAs version of xlsm for fields F18 and F19
<c r="F18" s="350">
<f t="shared" si="4" />
</c>
<c r="F19" s="350">
<f t="shared" si="4" />
</c>
Can anyone share why this occurred? When only opened file and then SaveAs file?