That last sentence is not correct:
These sessions originally had been on 10" LP (partly on 78's) and, due to playing time restrictions, were mixed up for the 12" LPs, which thus were the first reissues. Cover art was changed, too. On an average, three 10" LPs were used for two 12" LPs; in some cases, previously unissued alternates or tracks were added. In cases were there was not enough material for two LPs, tracks were left off (e.g. Lou Donaldson, Horace Silver Trios).
This applies to the Miles Davis, Thelonious Monk, Jay Jay Johnson, Clifford Brown, Tadd Dameron, Art Blakey Birdland, and Milt Jackson sessions.
For the first US CD issues Michael Cuscuna completed the sessions and put the tracks in recording order, but used the cover art of the 12" LPs.
The RVGs also have the complete sessions in recording order but ise the 10" LP cover art and, of course, are newly remastered by RVG.
There were Japanese issues replicating the 12" LP order, putting the remaining material on additional CDs.
I was referring to the Japanese Monk CD reissues, in the 1990s "Blue Note Works" series. Forgot to mention that. Oh well, no need to edit my post now.