Using ZenCart *1.3.9 and EasyPopulate Advanced. Minimal customization.

I need a way to quickly copy over some fairly complicated sets of attributes without having to manually located each of the 2,000 items in the database and assign their attribute and value pairs plus their price offset.

I'm selling cigars in boxes, but the boxes contain different quantities depending on the brand. So I have the attribute name Box, with the possible values being 3, 5, 8, 10, 12, 14, 15, 18, 20, 25, 26, 27, 28, 30, 36, 40 or 50. For each name-value pair (like "Box - 10") I also have a price factor that sets the price by adding the quantity less the 10% box discount. The factor for a box of 10 ends up being 7 to get the math done correctly.

Is there any way to tie the price factor to a single attribute so I can quickly copy it onto a product?

Is there any way to export and import this data in EasyPopulate Advanced? That program has jack and sh*t for documentation and they are very slow to respond to support requests even if you pay for it.