The arched line visible in A, going through to the next bar, seems to continue the bottom arm of the 
hairpin. However, according to us, it is an illusion – it was probably added as an extension to the slur, since extending one arm of the would make no sense, not to mention its bent shape, leading to the crotchet in bar 249. Anyway, it could have confused the engraver of GE, who led the mark slightly further than its top arm (which is unquestionable); as far as the slur is concerned, the engraver ended it on the last quaver in the bar.
Compare the passage in the sources»
category imprint: Graphic ambiguousness; Differences between sources; Source & stylistic information
issues: Inaccuracies in GE, Corrections in A
notation: Slurs, Articulation, Accents, Hairpins