Hello!
Years ago, as a conservatory student, I played the Sor sonata op.15b. At the time I played a modern edition, by Scheit (if I remember...)
I think this piece worths a more mature study, and I started digging in facsimiles.
I would like to know if the Salvador Castro version published in his "Journal de Musique Etrangère" is a good source. There are some differences between this edition (the first) and by Meissonier. Generally speaking, is Castro a reliable source or he was somewhat "creative" regarding the pieces of other composers published in the Journal?
After posting this question, I found this same Yates paper and it was very helpful, indeed. Also found In Brian Jeffery's notes to the Sor complete works (vol 2) http://www.tecla.com/extras/1001/1200/1202notes.htm
Jeffery's position gives more credit to the first edition by Castro, and ignores the Meissonier edition, which he considers untrustworthy.
After reading both versions, I also prefer the first one.