I actually came up with a workout around that may be useful.
I wrote a batch that takes a blank report (with the headers only) and renames it to the exported file. This batch is set to run before my batch for the project runs. So, it essentially clears out the file and sets it up for an export (if there is any)
BLANK is the the empty file and CLEAN_DAILY would be the export file that overwrites
copy BLANK.xls CLEAN_DAILY.xls