We've just released an often requested feature into the new plan builder. You can now copy/apply training sessions from one athlete to another athlete.
Watch the quick video here or see a full length video and details instructions in the following support document http://support.trainingtilt.com/training-plans/athlete-training-plans/copying-workouts-between-athletes
A few bug fixes for the new plan builder have gone live today including;
Page no longer scrolls to the top after opening a session in edit mode
Some dialog boxes that were being hidden underneath the statistics section now show on top so they are fully visible.
A bug where in some instances clicking the "Save all" button of workouts appeared to do nothing and did not actually save all the workouts has been fixed.