Primavera P6 Tips Part 1-How to Filter Out Activities That Are Not in the Baseline

Simply Run the  below filter:

BL Finish Date = Blank 

BL Start Date = Blank

You have to use both the start and finish if there are Milestones. This filter will show activities that are not in the Baseline. 

To show only activities that are in the Baseline use "Is not equal to"