In Motive, the Edit Tools pane can be accessed under the View tab or by clicking icon on the main toolbar.
The Edit Tools pane contains the functionality to modify 3D data. Four main functions exist: trimming trials, filling gaps, smoothing trajectories and swapping data points. Trimming trials refers to the clearing of data points before and after a gap. Filling gaps is the process of filling in a markers trajectory for each frame that has no data. Smoothing trajectories filters out unwanted noise in the signal. Swapping allows two markers to swap their trajectories.
Read through the Data Editing page to learn about utilizing the edit tools.