Can the current Beta version open aec files from Cinema 4D?

I'm doing very basic renders between Cinema 4D and AE. C4D lets me choose between rendering an OpenEXR file, or rendering the OpenEXR file with an accompanying aec. file that After Effects should be able to read. I'm doing a basic render (a sphere on a plane with a light) and rendering out the EXR file and the accompanying aec file. When I open After Effects - current Beta version 22.4.0, Build 41 - it can import the EXR file but the aec file is greyed out and unselectable.

There's a C4Dimporter plug-in that comes with C4D and I've placed this (if it's needed) in my AE plug-ins folder. If it's meant to help the process it doesn't seem to be doing so.

If this is a limitation of the current Beta, I can certainly wait, as I'm sure things will be fixed in the coming months, but I'd welcome some guidance as to whether I'm doing something wrong, if Maxon needs to fix things at their end for the Apple Silicon version of AE, or this is something that the Beta version will be able to do in the future but not now. Thank you.