Noun
reorchestration (countable and uncountable, plural reorchestrations)
Second or subsequent orchestration.
The Rimsky-Korsakov Version is often augmented with the Ippolitov-Ivanov reorchestration of the St. Basil's Scene (commissioned by the Bolshoy Theatre in 1925, composed in 1926, and first performed in 1927). Source: Internet
These revisions clearly went beyond mere reorchestration. Source: Internet