I've never had this problem before, I have a workbook that has about 15-20 tabs each with a pivot table derived from the same source. The data source range is 'Data Download'!$A$1:$I$10000. After refreshing the data source changes to 'Data Download'!$A$1:$E$1000 and any fields that were being used in the pivot table from columns F-I are lost. Any ideas on what I can do to stop it from changing?