VIEWING AND EDITING AN OBJECT'S TRAJECTORY

When the object of an animation is collapsed the spline line of movement is no longer necessary to be seen.

First you need to make the objects trajectory visible again.

The larger square dots show the position keys while the smaller white dots show the positioning.

Going to the sub-object level you may gain control over a certain key, and then you can add or delete keys on your trajectory line.

This can allow you to modify your movement.