If you create the comma-delimited file with Excel (.csv) and you do not enter the batch ID and week-ending date, Excel does not add commas for those columns and you will have to add them in manually. In addition, if you have cost codes that precede with a 0 and start the cost code in Excel with an apostrophe, it will save with the preceding zero. If you open the .csv file back up in Excel it strips out the preceding zero so you will have to be careful about reopening a .csv import file if using Excel.