I downloaded an XLS file from your website and filled in the fields by copy/paste from another spreadsheet. What is the correct data type? I assume a general or text field is correct. Can you be more specific in this area? I didn't use a third party "generated" data source. i copied and pasted data from another spreadsheet.
Once I get the the import sheet setup correctly, how can I start with a fresh product database? Can I wipe all the current data to start fresh?