Speedgrade has been discontinued, and has been neglected a long time. Its not surprising recent features added to Premiere Pro don’t work in Speedgrade.
Maybe locate the media from the render and replace…import it and manually edit it into the sequence so that you are not linking to the AE comps. It will just look like a regular Quicktime movie that way. Do this on a copy of the sequence, obviously, so you don’t lose the ability to tweak it again..
If you need advanced grading, I’d start transitioning to Resolve if the tools in Premiere are inadequate for what you need to do in future projects.