relationship between attributes and product-attibutes export/import files
 

With regard to importing and exporting attributes - could someone explain why there are two files for the attributes (attributes-xxx.csv and product-attributes-xxx.csv and what the relationship is between them.

Is the order they are imported important?

Re: relationship between attributes and product-attibutes export/import files
 

attributes-xxx.csv defines product classes and attributes.
product-attributes-xxx.csv contains values of attributes particular products have.

I'm not sure about the order, but I guess attributes-xxx.csv should be imported prior to product-attributes-xxx.csv