When the Special Editions of the Original Trilogy were released, complete (aside from Lapti Nek and Yub Nub) soundtracks were also released. Furthermore, an “Ultimate Eidtion” soundtrack was released for TPM. However, complete soundtracks were never released for AOTC or ROTS.
Disney has released complete soundtracks for Rogue One and Solo, but not for the Sequel Trilogy. Since Disney has gained the rights for the soundtracks for I-VI, they haven’t published the complete soundtracks for the OT that had been published since 1997 nor the “Ultimate Edition” TPM soundtrack that had been published since 2000.