Definitely one of the odder reissues as there seemed to be no reason for Pickwick to take one of Elvis' less-popular soundtrack albums and issue it again - with concert photos from the 1970s (including one from the Aloha From Hawaii concert) on the sleeve, yet! The only rationale I can think of is Pickwick planned to do more of these edited reissues (i.e. maybe they would have done Harem Scarum next) but this one didn't sell enough to justify it. That or after Elvis died RCA called home the licences before any more could be issued. BTW I used Harem Scarum as the example because based on the chronology in 45World's discography the first reissue by RCA after Elvis died was the Harem Scarum soundtrack!
Strangely Paul Lichter's book "The Boy Who Dared To Rock" has a Pickwick release listed as cat # ACI-7007, release date as November 1976 and same tracks in a different order starting with What Every Woman Lives For and ending with Petunia, The Gardner's Daughter. Maybe there is another version but seems doubtful.