Topline and Projected Impact
The topline impact is the measured effect that an active experiment has on the overall topline metric over the rollup windows. This is the real impact that results from running the experiment with its current allocation. The projected launch impact is an estimate of the topline impact we expect to see if a decision is made and the test group is launched to all users. This impact is computed relative to the expected baseline value of the topline metric if the experiment wasn't running at all.
Topline Impact and Projected Launch Impact currently do not use CUPED when measuring any impact induced by your experiment.