Thanks, Peter! This seemed to solve my problem.
But it brings up another question! I had purposedly selected the “Keep Keyframe Time” when I applied the effect to the new, longer clip because I wanted all the elements to animate at the same rate but just hold static on screen for the remainder of the longer clip. After I applied the effect, I went into the RED timeline and extended all the tracks so they lasted through the end of the timeline. The preview in RED showed the parameters doing exactly what I wanted them to do.
I’m assuming that the reason my video was cutting out was because the end keyframes still reflected the shorter effect even though I had dragged those keyframes to the end of the longer timeline.
Am I to understand that selecting “Keep Keyframe Time” doesn’t allow you to drag the last keyframe on a track to the end of a longer RED timeline? That seems to defeat the purpose of keeping keyframe time, so I’m sure I’m still confused about something here!
Thanks for the help,
Jim