When creating a new UDM is the Key Factors report based on each individual profile or is it based on the profiles you have selected for your UDM. I hope I am making this clear.
Should you run a Key Factors Report every time you add a profile to your UDM?
When you run a query through the Data Window and select Key Factors Report from the factors drop down - you are making the Data Window perform the following:
Show you results for the starters returned by the query you just ran broken out by rank=1 for each of the factors named on the Key Factors Report.
Put another way: Each line on the Key Factors Report shows rank=1 horses for that factor (combined with whatever factors were used to drive the query in the first place.)
Think of it as a way to spot potential areas of interest within the data set returned by the query.