It sounds like the other person put the effect on a filler track. Most effects can be added to filler to create custom transitions, letterbox an entire sequence quickly, etc… Remember, Avid treats filler like media–transparent media that you can apply effects to. I often use this trick for film flashes: Shot 1 cuts to Shot 2 on V1. On V2 I add a cut 6 frames before the end of shot 1 and add a cut 6 frames after the start of shot 2. Add Sapphire_Glow. Keyframe it from 0 brightness at the start of the effect to being fully blown out at the cut, then back down to 0. Covers the cut and saves me having to add edit to the first shot, applying the effect, keyframing it, adding an edit to the second shot, matching the first keyframe with the last keyframe from the previous cut, and then keyframing it back to 0. Sorry if I’m not making any sense, it’s kind of a weird thing to explain. But it’s great for transitions, applying a letterbox to an entire sequence (add a cut at the start of the sequence and the end on the top empty video track, apply the Letterbox effect, render), and it can save render time by applying an effect to only the parts you need it.
Michael.