This is regarding updating projects with baseline.
Suppose i have a project P with baseline B1. Now i add 2 new activities to the project such that the new activities appear in both baseline B1 and actual updating project (with same start and finish date)Ho to do this??
Project -> Maintain Baselines -> (select Baseline Project) -> Update Baseline (button). Then uncheck every box except 'Add new activities and activity data (except actuals)'. I think this will accomplish what you want to do. Of course, you could also restore the baseline, add the activities and add it again as the baseline.