Issue I434 [70,keep,minor,resolved] Pressing Keep twice in View clears trajectories. Prior to 8.0.4-TEST12, the current trajectories were swapped to the kept trajectories even if no new current trajectories existed (e.g. when pressing Keep a second time). In 8.0.4-TEST12, Keep has no effect if there are no current trajectories. Reported by dennisc-20070829. Affects 7.0 - 8.0.3. Resolve in 8.0.4-TEST12.