Just found this: Light Tracer Render Engine
What's so special about it you might ask? It also runs in your browser, on your GPU.
Something I just quickly clicked together to check it out:
If you ask me that is damn impressive for a browser based render engine, and it seems to be fast too!
The new "Store Selection" uses the same command ID as the old "Set Selection".
My guess is that MAXON has simply renamed and reimplemented the old command with the new behaviour.
I have provided here a script which mimics the old behaviour.
Have not tested on S24 or above.
Enjoy!
Set Selection (legacy).zip