In my animation video, why are certain object types missing and/or not moving?
Answer: The scale factor of the video should not be greater than the automatic scaling value which the software uses to plot and envelope displacement.
To find the suggested value, plot the displaced configuration, select the Multivalued option labeled Envelope, and then select the Scaling option labeled Auto. Next, display the displaced configuration named Envelope, then change the scaling option to Scale Factor. This value represents the appropriate scale factor for the video.