Customer just upgraded to v2018 Premium and is seeing zero quantity lines in their Valuation report (when they choose to not show zero quantity lines), which we've encountered with upgrades before. The difference here is that these are for Standard Cost items (when we normally see this with cost tiers).
The IM_ItemWarehouse ""TotalWarehouseValue"" field is non-zero for the zero quantity items showing on the report, and looking at transaction history the calculated $ value is indeed non-zero. So far I see a few patterns (in 1600+ items) with bad costs: IX (balances carried forward during an item history purge), Standard Cost Adjustments, returns and transfers.
(In the image ""BadAmount"" is the TotalWarehouseValue for the item).
We've had to run the IM Recalculate utility for this customer, and I'm wondering if such issues with TotalWarehouseValue are ""known""...?