Hi Alain,
Good questions, as apparently the logic of it is not obvious (and hey, I am glad that I understand all myself - uhm, that assumed).
Actually the "rules" are quite simple :
What's been copied to RAM is copied from somewhere and this is the normal "BASE" persistent storage. So when whatever feature is in that persistent storage, it will be copied to RAM just the same and will be operative there just the same.
Also, what is not in persistent storage, will obviously not be copied to RAM. But/and :
If we don't count in the XXHighEnd Settings ... all what has been applied to the RAM version of an OS, will NOT be copied back to persistent storage (manually some things can be done though, but for simplicity of understanding let's disregard that too).
From the above follows that whatever we want to let work in RAM must be applied to the BASE *first*.
Also, whatever it is what is applied to the RAM version, will be lost when we shut down/reboot.
And : There is nothing that I can think of that requires application in RAM and not in the BASE (or it must be things which we explicitly like to have temporary (like for that RAM boot session only).
Now to answer your question :
Yes, of course it is so that when you need to solve device conflicts, need to install drivers, etc., you will do this in the BASE version. After that it will work exactly the same in the RAM version.
Side note : Actually you will do these things in the Normal OS version of the BASE version.
All done ? then (you are still in the BASE version !) boot into MinOS (this is just a Reboot, implied by XXHighEnd) and from the BASE version there (MinOS now) boot into the RAM version. The "from there" is actually not in order, because all you did was preparing your BASE version by whatever means (including the Minimization), so it can be copied nicely to RAM.
Lastly, all what happens extra when shutting down (or reboot) from the RAM version is that XXHighEnd's settings are automatically saved to the BASE version (but insert the Disk). Mind you, only of that same OS (the others remain untouched). So easy : at the next boot these settings are again copied to RAM (they are part of the OS and the whole OS is copied to RAM first, before it boots from there).
Ask more if needed !
Peter
PS: See ? it is not the question which can be way OT in the middle of another subject, but it is my answer that will make it that, hugely. Haha.