Hi Susan

The way to troubleshoot this is to bring your GL up-to-date every day and compare the balance as of each day with the Item Valuation report as of the same day. The difference should be the same between days, if it isn't it is much easier to figure out what is going wrong if you are looking at only one day's worth of activity.

Your thought that the "actual cost" should equal the balance in account 1300 is correct.

Steve