This is a known bug that required vba code to re-apply formatting.

XL2000: Changing a PivotChart Removes Series Formatting
http://support.microsoft.com/?id=215904

Cheers
Andy

DeeJay wrote:
Is there any way to not lose border formatting after refreshing a Pivot
Table? I can keep the outside borders but the linside lines awlays have to
be placed back.

Thank you.

--

Andy Pope, Microsoft MVP - Excel
http://www.andypope.info