As to Gypsy, the orchestration restoration/reconstruction had been going on for some time since the Tyne Daly production. At that time, Dale Kugel, the late librarian of Tams-Witmark, now Concord Theatricals, made trips up to Columbia to examine the original scores for two reasons: restore the harp part and look over the original scoree for the overture, before he created a new edition for the concert library rental.
DR singdaw provided the link to a Playbill article by Jay Diaz about "restoring the original materials for the Lyric Stage, but Diaz didn't mention that the "original" guitar part - which we believe was created for the 1973 Angela Lansbury London production and not the 1959 Broadway production - is full of errors sicne it was created from the published vocal score, which has many errors, and not from the orchestra scores.
Joshie did a lot of work on the orchestrations for the City Center Encores! production, but there was neither time nor money for a full-scale overhaul, something that the new George Wolfe-Audra McDonald revival provided the stimulus for the Jule Styne estate to fund. The revival has pushed this "original orchestrations" claim in its publicity, but the project I was involved with was never a part of the production. Joshie and Jason have provided the new scores to the music direcvtor, Andy Einhorn, but, no, you're not going to hear all of the 1959 Broadwat orchestrations in this revival for several reasons:
1. New dance music, new scewne change music.
2. The orchestra for the revival uses the original brass, reed, and percussion, but a total of 3 celli and, I think, 5 violins; we think the original had 8 violins and the scores show there were 4 celli.