Created Unassigned: ShiftRows in ShiftRows XSSFWorkBook [11828]

Hi all.

I'm implementing a spreadsheet based in Office 2007(.xlsx) and using the interface IWorkBook, implementing the class XSSFWorkBook. But when I use the method ShiftRows in ISheet, it's work different way if I was implementing HSSFWorkBook.

What's the difference:
The method ShiftRows from ISheet when I use HSSFWorkBook, has update the member LastRowNum, but implementing XSSFWorkBook it not work.

Do it can be change in the next update?

Thanks advanced.