The Data Tool can be used both to populate a brand new store with product data and to update an existing store. In cases where you are updating a store, there are three options as to how you handle existing data already in the store:
Add imported data to existing data and ignore duplicates - do this if your site database data is the 'master' version, and you've made corrections and changes to it, or are just confident existing data is already perfect
Add imported data to existing data and update duplicates - in this case, any duplicates in the destination will be updated from the source data
Reset database and import - this will clear existing data, and then import the data so you retain no previous data
Depending on where you are importing data from (CactuShop,
Kartris or spreadsheet), there are also a variety of filters to
control what data is updated.
