I don't believe that there's a way to reveal the effects used in a sequence.
You can right click after selecting all the clips and choose to remove all the video filters, un-checking motion and opacity, but that will of course remove everything else.
The missing filters will show up as unsupported or missing in the effects panel so you should be able to go through each clip and check pretty quickly.
It should also tell you "which" filter is missing at startup so that you can reinstall if needed.
Sorry, no real solution, but that's probably the only way to go about it.
Vince Becquiot
Kaptis Studios
San Francisco - Bay Area
