Hi LJA,
What version of OrderEntry are you running?
What is the Costing Method of your items? FIFO, LIFO, standard costing, etc? This will identify how costs are determined when you perform Day End in OE.
Also, do you allow negative inventory in your IC company profile? This is important if an item has negative qty, the usual rules are over-ridden. Also a 'residual cost' may have been applied if the quantity on hand became negative, meaning if there was a non-zero 'Total Cost' on the item at the point that quantity equals zero, that total cost gets applied to orders (or at least it did in older OE versions).
OE Day End does not update the costs such as Standard Cost or Most Recent Cost. These fields can only ever be edited manually (ie from Edit Items) or if you post a receipt for the item (either in Inventory or Purchase Orders). The 'change date' will indicate when the cost change was made, and perhaps you can identify this with a receipt?
The 'previous' cost is informational only and does not affect any processing. It only indicates that the cost changed from one value to another, and you can see what the previous value is.
We'll need some more information in order to be able to answer this question better.
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Regards,
Softrak Tech Support