Toolbox Config Spreadsheets

I have created our own internal toolbox by renaming AnsiInch, exporting the spreadsheets and adding our own descriptionsand MS spec numbers. I then imported the spreadsheets back in. Thisworked fine but now if I try to edit the spreadsheets by exportingand importing again the new spreadsheet won't file over. Anybodyknow a way around this?SolidworksToolbox