Create a VBS filter node (somewhere in the pipeline after the converter has been processed). Set VBS file (plugin_template_DTO.vbs) and VB Class (PluginBaseC_DTO).

Add the following code to the function DTO:

 ' Create new classification
  Dim classification As PSolUnitProxy.prxClassification_1
  Set classification = CreateObject("wh.Classification_1")
  classification.SystemId = "customID"
    
  ' Prepare attribute.
  Dim newAttr As PSolUnitProxy.prxProductAttribute_1
  Set newAttr = CreateObject("wh.ProductAttribute_1")

  ' Prepare the attribute value.
  Dim newAttrVal As PSolUnitProxy.prxAttributeValue_1
  Set newAttrVal = CreateObject("wh.AttributeValue_1")
  newAttrVal.Text = "newtestpath/whatever“ ‘ Import Path for parts
    
  newAttr.Name = "imppath_"
  newAttr.Group = "imppath"
  Set newAttr.Value = newAttrVal
        
  ' Add Attribute to classification
  classification.addAttributeValue(newAttr)    
  ' Add classification to product
  product.addClassification(classification)

Edit Structure Node in PARTdataCenter.

Document Path: imppath (Group of attribute); imppath_ (Name)

   "SystemId": "customID",
   "AttributeValue": [
       {
           "Name": "imppath_",
           "Group": "imppath",
           "Value": {
               "Text": "newtestpath2/whatever"
           }
       }
   ]