I have the following formula in sheet2, which is a summary from sheet "MAIN".
This formula is in cell "A14" this is dragged down to cell"A5000". This is
done to columns A to G.

=IF($A14="","",SUMPRODUCT((MAIN!$A$11:$A$5000=$A14 )*(MAIN!$D$11:$D$5000)))

The problem Im having is when I clear contents in sheet "MAIN", it clears
the data in sheet2. Is there a way so that sheet2 keeps a cumulative total of
sheet "MAIN"?
This will enable me to just have about 100 rows in sheet"MAIN".

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George