Answers
Nov 23, 2015 - 01:05 PM
Please review our Data Mapping fields at https://docs.google.com/spreadsheet/ccc?key=0Aiv9QpDVbwf9dG5CcHQyQ2JQOFpYSmRCM0
g0aTRUdHc&usp=drive_web#gid=0 it describes what fields are required for adding and updating existing data there is also a Sample Data Sheet with all headers in the document. You can also export your existing data out from Products > manage products> Feed tasks > export feed
