Excel Help Text Function
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Excel is trained to look for numbers being entered in cells, not numbers that look like text, like part numbers or SKU's. To retain leading zeros, format the input range as Text before you paste or enter values. Select the column, or range where you'll be putting the values, then use CTRL+1 to bring up the Format > Cells dialog and on the Number tab select Text . Now Excel will keep your leading 0's.