I have a dataflow that gets data from a "Person and Group" SharePoint column (pulls in the ID) but it's not bringing in the ID for every item that has a name in the column. In some cases where there is a name, it acts like the name isn't there and just puts "null" in the results table. Why does it do that for some, and for others, it pulls in the ID?
It turns out I needed to add the column name to a SelectColumns function in one of the applied steps of a query in the dataflow.