The 
hairpin, very clear in A, was overlooked both in FC (→GE1) and FE (→EE). Its absence in FC may be explained by a possibility that the mark was added in A later, yet its absence in FE must be an oversight. The hairpin was added in GE2 (→GE3) most probably by analogy with the remaining three similar places.
Compare the passage in the sources »
category imprint: Differences between sources
issues: Errors in FE, Errors of FC
notation: Articulation, Accents, Hairpins