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b. 3-4

composition: WN 37, Lento con gran espressione

c1 repeated in A1

c1 tied in CJ, CK (→CB) & EL

..

The missing tie of c1 is probably Chopin's oversight in A1, hence we consider it acceptable to add it in the text of A1.

category imprint: Differences between sources

issues: Errors of A

b. 5

composition: WN 37, Lento con gran espressione

No slurs in A1, CK & EL

Slurs in CJ & CB

..

The fact that the slurs are featured in CJ only makes us think that they could have been added by Chopin, who might have had the opportunity to go over this copy. However, it is an assumption only that actually does not influence the evaluation of authenticity of these slurs in any way.
The slurs in CB must be an arbitrary addition of the writer, who provided the L.H. part with slurs in the entire piece. 

category imprint: Differences between sources

issues: Balakirev's revisions

b. 5

composition: WN 37, Lento con gran espressione

No grace notes in A1

Grace notes in CJ, CK (→CB) & EL

..

According to us, the fact that the ending of the trill is not written out does not mean that Chopin envisioned it being performed differently while writing A1. It is rather an element that was skipped in the working notation, since Chopin regarded it as obvious.

category imprint: Differences between sources

b. 5

composition: WN 37, Lento con gran espressione

..

In A1 one can see that the 6th quaver was initially an f, like in b. 13 and 46.

category imprint: Corrections & alterations; Source & stylistic information

issues: Corrections in A , Accompaniment changes

b. 5-6

composition: WN 37, Lento con gran espressione

Slur in A1, literal reading

Slur in CJ, literal reading

Slur in CK (→CB)

No slur in EL

..

In the main text we give the slur of CK (→CB), which is unquestionable in terms of image and music. According to us, it can also be considered an interpretation of the possibly inaccurate slurs of A1 and CJ. The slurring of A1 is generally rather of draft nature – careless and mostly short slurs appear only occasionally.
The absence of the slur in EL does not seem to be an oversight, since this edition is generally devoid of slurs and phrase marks – slurs that are not related to irregular groups are present only in b. 44 (arbitrary) and 47 (authentic). As a result, it could be regarded as a general editorial oversight.

category imprint: Graphic ambiguousness; Differences between sources

issues: Inaccurate slurs in A , Inaccuracies in JC , Revisions in EL