the problem is the recordset filter settings, you are filtering the ItemCatID column:
Recordset Details:
Name: rsItems
Connection: connProd
Tables: Items
Columns: All
Filter: ItemCatID =
URL Parameter ID
Sort: ItemID Ascending
Set it to filter the ItemID column instead:
Recordset Details:
Name: rsItems
Connection: connProd
Tables: Items
Columns: All
Filter: ItemID =
URL Parameter ID
Sort: ItemID Ascending