There is  generic Import program that can import anything you want; the caveat being you need to know the files and fields affected so you don't mess something else up.  I am not sure I understand your question, however.  When a new item is entered, by definition the UOH and Average and Last cost are 0 and will be updated the first time the item is transacted.  Base price is what you want to sell it for and Standard cost (if a purchased item) is what you manually select it to be.  What option are the new items coming up on the Inventory Exceptions Report that you want to exclude?