I have two questions:
Firstly, in the code section what is the difference between TemplateAttributeHandler and AttributeHandler?
Secondly, I want to try and add importing the inventory attribute values to the import screen so I am figuring some sort of naming convention to match the group and the attribute to the column like GroupName|AttributeName is going to be needed, could this be made to work? The group would need to exist as would the attributes being imported.