Issues : Authentic corrections of GE

b. 139-140

composition: Op. 42, Waltz in A♭ major

Rest in FE

Tied sixth in GE & EE

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The version of FE without the hold of the e-c1 sixth is earlier – in FEG (→GE) Chopin added the ties and a crotchet at the beginning of bar 140. An identical addition was most probably performed by him in the base text to EE. Due to this fact we adopt it to the main text. However, it should be mentioned that while proofreading the slurring of this phrase in FE1, Chopin ended the slur in bar 139 and did not add the hold of this sixth. Hence, the version of FE1 cannot be considered as definitely rejected. 

category imprint: Differences between sources; Corrections & alterations

issues: Authentic corrections of GE , Authentic corrections of EE

b. 152-165

composition: Op. 42, Waltz in A♭ major

Slur in FE0

Long slur in FE1

Four slurs in FEG (→GE1)

Four slurs in EE

Five slurs in GE2 (→GE3)

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The slurring in bars 159-164 is clearly incomplete in FE0, which may be a result of Chopin's inaccuracies in [A], errors of the engraver or both. Chopin then changed and completed the slurs in FEG, the base text to EE and proofreading of FE1, yet in all of them differently. In total, it gives three different authentic slurring versions. In the main text we give the version written by Chopin's hand in FEG (→GE1), as in the case of FE and EE, there is a slight possibility that Chopin proofreading was overlaid with certain mistakes, manners or revisions of the engravers.
It is not entirely clear what the motivation of the reviser of GE2 (→GE3) was at the time of breaking the slur between bars 159 and 160. 

category imprint: Graphic ambiguousness; Differences between sources; Corrections & alterations

issues: GE revisions , Authentic corrections of FE , Authentic corrections of GE , Authentic corrections of EE

b. 174

composition: Op. 42, Waltz in A♭ major

 
 
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On the 2nd and 3rd crotchets in FE there is no c1. Chopin completed this deficiency in FEG (→GE). EE also features the correct version.

category imprint: Differences between sources; Corrections & alterations

issues: Errors in FE , Authentic corrections of GE , Authentic corrections of EE

b. 210

composition: Op. 42, Waltz in A♭ major

in FEG (→GE) & EE

No indication in FE

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Chopin added the sostenuto indication in FEG (→GE) and most probably also in the base text to EE.

category imprint: Differences between sources; Corrections & alterations

issues: Authentic corrections of GE , Authentic corrections of EE

b. 216-217

composition: Op. 42, Waltz in A♭ major

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The placement of crescendo differs slightly in particular sources. In FEG Chopin added cresc. under the last quaver in bar 216, and this is how it was reproduced by the engraver of GE1. In the next editions, GE2 (→GE3), the indication was moved slightly to the left, starting on the last quaver in bar 216. In EE the word crescendo was divided into syllables, which is a characteristic revision of the editor, and it was started at the end of bar 216. In the main text we adopt the indication of FE1, beginning in bar 217. 

category imprint: Differences between sources

issues: Authentic corrections of FE , Authentic corrections of GE , Authentic corrections of EE