In Orders > Orders List, using the gear icon, search for and add the "Sales Reps" column.
Using the "Advanced" menu next to the Order Search bar, enter "Sales Reps" to filter orders by Sales Reps.
Select the orders you would like to export, then using Bulk Actions > Export select "Export Full Order Data".
Sales Rep information will appear in the first few columns of the exported CSV file.
Updated over 2 years ago