The change of slurring in these and the next bars must be coming from Chopin. According to us, the aim was to replace the shorter slurs of A with longer ones, which, however, was marked or implemented inaccurately in the discussed bars, hence the second of the original slurs (supposed to be removed) was left untouched. A similar phenomenon is to be found in, e.g. the Concerto in E minor, Op. 11, III mov., b. 179-181. In Chopin's autographs, one can find numerous examples for prolonging or combining initially written shorter slurs, e.g. in b. 112-114 of the Ballade, in the Mazurka in A
major, Op. 24 No. 3, b. 7-8 or in the Prelude in D minor, Op. 28 No. 24, b. 30-35.
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category imprint: Differences between sources; Editorial revisions
issues: Authentic corrections of FE, Partial corrections
notation: Slurs