Interesting notes from the "Literature" section of the TV Tropes page "Divorced Installment":
QuoteJohn Grant's 1994 licenced Judge Dredd novel The Hundredfold Problem was republished in 2003 with all references to the Mega-City One 'verse removed. Judges Dredd and Callisto were replaced by Dave Knuckle and Petulia McTavish.
The Doctor Who novel, The Burning Heart was supposed to be a crossover with Judge Dredd but after the failure of the 1995 movie, Dredd was replaced with Adjudicator Joseph Craator.