Keyframes vanish when 3rd 4WE added

[fonhorn]

I have a scene requiring 3 vehicles. One of the vehicles is an 18 wheeler which I have rigged with "4WE" and "Trailer." The second vehicle is a sedan rigged with 4WE. The 3rd is a box truck (6 wheeler), rigged with 4WE. I animated the 1st two vehicles in Autonomous mode. After that, I merged the 3rd vehicle. At first, everything is fine. The sedan and the 18 wheeler are still doing what I want them to do. The tractor and trailer each have keyframed motions as they roll over. When I run the 3rd vehicle simulation, I loose the keyframes for tractor but not the trailer's keyframed motion. The trailer motion is fine. The other vehicles are doing fine. What happened to my tractor's keyframes?

[Patrik Martin]

I have a scene requiring 3 vehicles. One of the vehicles is an 18 wheeler which I have rigged with "4WE" and "Trailer." The second vehicle is a sedan rigged with 4WE. The 3rd is a box truck (6 wheeler), rigged with 4WE. I animated the 1st two vehicles in Autonomous mode. After that, I merged the 3rd vehicle. At first, everything is fine. The sedan and the 18 wheeler are still doing what I want them to do. The tractor and trailer each have keyframed motions as they roll over. When I run the 3rd vehicle simulation, I loose the keyframes for tractor but not the trailer's keyframed motion. The trailer motion is fine. The other vehicles are doing fine. What happened to my tractor's keyframes?

Are you animating the tractor with a motion path as well? If not you probobly missed to uncheck the keyframing of the tractor (the key on the left of the tractor in the tool-list) when you did your next animation. What this does is that it places new keyframes for the tractor. If you make this mistake you can always go back by undoing.

[fonhorn]

I was using a motion path with keyframes added at the end of the path; but, you're correct, I failed to uncheck the key-framing icons for everything except the new 4WE. It's been so long since I've had to do that, that I completely forgot about it. Thank you.