The absence of 
in FE (→EE) could be explained by an oversight or by the fact that it was entered into [A] after [FC] had been finished. Anyways, it is highly unlikely that Chopin would have removed that indication on purpose, hence we give it in the main text. In turn, the status of the dashes marking the range of cresc. having been led to the end of the bar is unclear. It could be an inaccuracy of the copyist or of the engraver of FE; however, one could imagine a scenario in which they are an authentic alternative to – if the proof copy of FE1 had not contained cresc. - - either, Chopin could have added it with such a range of dashes.
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category imprint: Differences between sources
notation: Verbal indications