Importing Data to Many-to-Many Relationships (populating related fields in join tables)

I'm trying to understand if the 2nd data set is the same information as the first data set but only presented differently, or is in in fact a completely separate set of data, even though it is data for the same Individuals and the same Organizations.

I was hoping that you did not, in fact, have to load the second data set at all if it was just a duplicate of the 1st data set just presented differently.

That middle Join tale just needs the info loaded once, not twice.