Duplicate Products. - I'm using EP 2.74-MS2.
I upload a product with two attributes, Say Size (Small, Medium and Large) and Colour (Red Blue Green). Everything is fine. The problem I have is that I add a new size, say XXL, to the products entry in the EP file and upload, but I end up with osCommerce creating a new product entry - everything is the same, even the model number (column A in EP file) but the orginal product is available in Small Medium and Large and the 'new' product is available in Small, Medium, Large and XXL.
What do I need to do to achieve an update rather than an addition.