Wasn't "apparitions" a collection of a particular arc (Rupert Thorne/Silver St Cloud)?
STRANGE APPARITIONS collects the Englehart Batman storyline from DETECTIVE 469-476 (469-470 by Englehart/Simonson, and 471-476 by Englehart Rogers/Austin), and DETECTIVE 478-479 by Wein/Rogers/Giordano(these last 2 issues a Clayface story, unrelated to the previous Rupert Thorne/Prof Hugo Strange storyline). So it's not clearly a Rogers collection, or strictly a Rupert Thorne collection, there's only the loosest reference to Silver St Cloud in issues 478-479, as Batman grieves over losing Silver in a "see last issue" reference.
So it would have been easy enough to include issue 481, or even the Calculator stories from 466-468, to show Rogers' development on the Batman character.