This product does not show the Quantity Box when Adding to the Shopping Cart.
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While Quantity Box Shows is set to YES, the Product Qty Max has been set to 1

This will add only 1 to the Shopping Cart when Add to Cart is hit.
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The reason for this is that this is a download. As a download, there is never a reason to allow more than quantity 1 to be ordered.
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NOTE: If using Quantity Box Shows set to NO, unless Qty Max is also set to 1 then each time the Add to Cart is clicked the current cart quantity is updated by 1. If Qty Max is set to 1 then no more than 1 will be able to be added to the Shopping Cart per order.
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Two methods are available to trigger the Hide Quantity Box.
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Method 1: Set Quantity Box Shows to NO
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Method 2: Set Qty Maximum to 1
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In either case, you will only be able to add qty 1 to the shopping cart and the quantity box will not show.
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