peek in the products table via phpMyAdmin ...
What is the setting for the
products_qty_box_status
on the products that you just imported?
Manually add a product ... when you hit the New Product what is the default setting read on the:
Products Quantity Box Shows:
Should be set to YES by default ...
NOTE: in the Configuration ... Product Info ...
Product Quantity Box Status - Adding New Products
What should the Default Quantity Box Status be set to when adding New Products?
0= off
1= on
NOTE: This will show a Qty Box when ON and default the Add to Cart to 1




