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Slurs

b. 46-48

composition: Op. 29, Impromptu in A♭ major

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We give the slur of A (→GE). FE and EE are totally lacking the slur, which can be considered as an obvious oversight.

category imprint: Differences between sources

issues: Errors in FE , Errors in EE

b. 48-50

composition: Op. 29, Impromptu in A♭ major

 
 
 
 
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The final fragment of the slur in A is written with panache, so the slur goes to bar 51. However, the shape of the sign clearly advocates for ending the slur in bar 50. In this situation the version of GE must be considered as erroneous.
The slurs in FE and EE probably reflect the original Chopin's notation: the slur in EE is almost entirely compatible with the range of that part of slur in A, which is written with a thicker line (from the 2nd crotchet of bar 49). Therefore, it is possible that Chopin first wrote this part and then completed the initial fragment of the slur.

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

issues: Overextending slur , Errors in GE

b. 52-56

composition: Op. 29, Impromptu in A♭ major

 
 
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The slurs in FE are most probably erroneous, as in all similar places in this part of Impromptu, the phrases start with an upbeat. 

category imprint: Differences between sources

issues: Errors in FE

b. 52-54

composition: Op. 29, Impromptu in A♭ major

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In A the slurs in the L.H. seem to overlap. However, the analysis of the way of writing slurs in the entire middle part leads to a conclusion that it is only a manner without substantial meaning. Cf. the endings of the slurs in A in bar 38, 44, as well as in bar 72

category imprint: Graphic ambiguousness

issues: Inaccurate slurs in A

b. 54-55

composition: Op. 29, Impromptu in A♭ major

 
 
 
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The meaning of slurs in A is not entirely clear (bar 54 is the last one on the page). The continuous slur in GE and EE seems to be closer to Chopin's intention than separated slurs in A.

category imprint: Graphic ambiguousness; Differences between sources

issues: Inaccurate slurs in A