diff --git a/ISOv4Plugin/Mappers/TimeLogMapper.cs b/ISOv4Plugin/Mappers/TimeLogMapper.cs
index 5c7e1e9..4922ace 100644
--- a/ISOv4Plugin/Mappers/TimeLogMapper.cs
+++ b/ISOv4Plugin/Mappers/TimeLogMapper.cs
@@ -684,9 +684,6 @@ private void AddProductAllocationsForDeviceElement(Dictionary<string, Dictionary
 
             switch (productCategories.FirstOrDefault())
             {
-                case CategoryEnum.Variety:
-                    return OperationTypeEnum.SowingAndPlanting;
-
                 case CategoryEnum.Fertilizer:
                 case CategoryEnum.NitrogenStabilizer:
                 case CategoryEnum.Manure:
@@ -724,7 +721,9 @@ private OperationTypeEnum GetOperationTypeFromLoggingDevices(ISOTime time)
                 }
             }
 
-            DeviceOperationType deviceType = representedTypes.FirstOrDefault(t => t.ClientNAMEMachineType >= 2 && t.ClientNAMEMachineType <= 11);
+            DeviceOperationType deviceType = representedTypes.FirstOrDefault(t => t.ClientNAMEMachineType >= 2 && t.ClientNAMEMachineType <= 11 &&
+                t.OperationType != OperationTypeEnum.Unknown);
+
             if (deviceType != null)
             {
                 //2-11 represent known types of operations