Hello,
I was forwarded the link to this forum, and thought that the following blog posting by Maestro Salvatore Di Vittorio would answer many of your questions. It is the official blog of the Chamber Orchestra of New York "Ottorino Respighi". The posting is titled "Why are the new Respighi editions even necessary?" (dated July 9, 2011)
http://chamberorchestrany.blogspot.com/2011_07_01_archive.html
I was forwarded the link to this forum, and thought that the following blog posting by Maestro Salvatore Di Vittorio would answer many of your questions. It is the official blog of the Chamber Orchestra of New York "Ottorino Respighi". The posting is titled "Why are the new Respighi editions even necessary?" (dated July 9, 2011)
http://chamberorchestrany.blogspot.com/2011_07_01_archive.html