The 
hairpin written in A1 in b. 39-40 was overlooked in FE (→EE). In turn, the absence of the mark in GE may mean that Chopin decided not to use that indication in [A2] (→GE). However, other explanations are also likely, hence in the main text we suggest an alternative solution. Due to the fact that the notation of the R.H. part in b. 40 in A1 is incomplete, the range of the mark is ambiguous, and the range we suggest is one of the possible interpretations.
Compare the passage in the sources »
category imprint: Graphic ambiguousness; Differences between sources
issues: Errors in FE, Inaccuracies in A
notation: Articulation, Accents, Hairpins