Update to my last post...

So I've upgraded to EP4 now. I am getting seriously confused though. When I go to 'Tools' > 'Easy Populate 4', I don't see any option to download my inventory with all the product URLs. Any file I can download via EP4 doesn't have them, I can only get the product URLs via the older version of EP.

I am also now getting huge files down with 7-8,000 items when there only should be 5,300 items in my store. I don't understand why the system is not purging all my existing inventory and replacing it with the 5300 items in my upload?

I've tried to add custom fields including weight and barcode to my product database but that doesn't seem to have worked at all. They all just show as 'FALSE' in the EP4 window. I see there is a field for 'Product UPC Code' under 'Custom Products Fields' but that has 'FALSE' next to it and I have no idea what I'm supposed to do with that.

I am getting really muddled now and I seem to be compounding my problems by adding in extra unknowns and issues. All I want to do is upload my inventory with the weights and barcodes specified for each item, and then download it with the product URLs appended.