In A the arpeggio sign merged with the 
before the second grace note (see the note on grace notes above), hence it was omitted both in FC (→GE) and FE (→EE). In FED Chopin added a diagonal slur to mark arpeggio.
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category imprint: Differences between sources
issues: Annotations in teaching copies, Errors in FE, Annotations in FED, Errors resulting from corrections, Errors of FC
notation: Ornaments