How do?
Decided to start this topic because of a (now ancient) short story printed in an obscure WD, around about the time of Eye of Terror. In this story, a top secret, quite possibly rogue Magos Biologis installation is raided by Fabius Bile, who makes off with something - something heavily implied to be a clone of a Primarch (if not in fact the body of a Primarch).
Couldn't tell you the issue number beyond 'around about Eye of Terror time, or just immediately before' but I can tell you it was a cool read.
What other dribs and drabs of Lore have fallen by the way side? Doesn't have to be Galaxy changing, just favoured short stories and that.