I have a row ID setup with auto numbering on a totals sheets that contains all the copied rows from multiple projects. When the copied rows are inputted into the total sheets (using automation) the row ID is then updated with the row ID from the other sheets. I use this auto number field to identify duplicate rows (and in turn remove those rows). Is there a way to create another auto numbering column that I could use for my duplicate formula? Or a way to stop the overwriting of the auto number column? Right now it's deleting all the multiple rows (instead of just the duplicated ones). The formula I use is to identify the duplicates is =IF(COUNTIFS([Task ID]:[Task ID], [Task ID]@row, [Row ID]:[Row ID], @cell <= [Row ID]@row) > 1, 1, 0) .