Object vanish in Chor Render

#1

I have an object that I render in AM’s chor mode for a total of 4:20 (4 seconds, 20 frames). There is a sphere that starts out with 100% Transparency and ends in 75% with the glow activated near the end. Inside the sphere is a spiraling object that I slowly change from 0% Transparency to 100% at the 4:10 mark. Also on this inner object, the reflectively(1). The reflectivity radius(2) and the one below that(3)
I believe, get boosted to 80%(1), 60%(2) and 20%(3) at the 4:10 mark as well. While in its non rendered state the inner swirling object disappears just like I want it to, but in the render it shows up as a blackened object. I set the reflectively, The reflectivity radius, and the one below that to 0% at 4:09 and did a “Q” render and the fully transparent object was still clearly seen as a blackened object. Is there an easier way to make an object vanish gradually over time inside a slightly reappearing object?

#2

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