The difference in the notation of the crescendo hint in FEcor and FE (→GE,EE) is puzzling. According to us, Chopin's entry in FEcor was not performed by the engraver (it was totally omitted or – more likely – only partially considered, without the dashes limiting its range), so in the next proofreading Chopin wrote the indication again, this time divided into syllables (cf. bar 42). The interpretation of the entry in Ap is also not entirely clear. We assume that it was about leading it until 
in bar 47.
Compare the passage in the sources »
category imprint: Interpretations within context; Differences between sources
issues: Authentic corrections of FE
notation: Pitch