When I use the Transaction History function within the Item Inquiry with Sales and Costs, I am able to see Receipts loaded for items that have leading spaces in the item code. So there is something different happening with your company IC data and what I see in my test environment.
What is your Item Format as defined in the IC company profile? This means both the overall length of your item codes, how many segments are in the code, and what are the lengths of each segment. This could be useful in isolating what you are finding.
If you are confident that the receipts in question exist in IC History (ie you can see them on the Transaction History report), you probably should get your Adagio dealer involved with this one.
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Regards,
Softrak Tech Support