Follow-up to Lords Of Midnight, yes.
Also:
Multi format, but wait a minute!
I know about games that had standardised sections of their instructions...
I have - among others - Road Blasters, published by US Gold, for the C64.
With it came a separate sheet, not attached to the inlay, for loading instructions for C64, CPC, Spectrum, Atari and MSX. However, there is no US Gold Road Blasters for Atari or MSX - this was just a sheet that the publisher put in with a number of its games to save hassle.
While Doomdark's booklet is multi-format: C64, Amstrad CPC, ZX Spectrum and Atari, it contains details specific to each version, such as keys for movement.
It's when I see things like: "...to look at the map, press F1 (Atari version: press Option)...", I suspect there was a version written, as why else would they be mentioning details?
The sheet with Road Blasters contains no information whatsoever apart from press Shift & Run/Stop; hold Start & Option, etc and thus can't be trusted, because that info would have been the same regardless of what the game was.