Bulk Import of Items in I/C

SOLVED

I'm wanting to add about 600 items to an already existing list of products in our datasbase.

So, I exported 3 lists:

                I opened I/C “Items”. I created a script that would contain all the columns we use in that first tab (of the Items Module), and the UOM tab and the optional fields tab. I set the criteria and successfully created that list.

                Then in I/C “Item Pricing”: I exported the Item Pricing list for only the same list of products. (To add Base Price.)

                Then in I/C “Location Detail” I exported the Location Details for the same product list (for entering the cost)

 So … If we were to add all the new products to the bottom of these lists, making sure the columns are filled out with the correct info like the part numbers that are there already, and upload them in this order:

Items, Item Pricing, Location Detail … would all the new products be in the database with all their correct information?

Or is there some other way to add a bulk amount of products to an already existing list?