Hi Jackson,
This is normal behaviour for microflows retrieve for datagrids. Perhaps it would be possible to get the list using XPath, that would give you the possibility to display association attributes.
If you face difficulty in getting your data by xpath directly - you can create a container object (dataview) in which you retrieve the actual data using a button and associate that data to the container. The grid would then retrieve this data by xpath from the container object and you will be able to use attributes over association (+ sort + export to excel).