In AI the slur running further on, to bar 100, begins in bar 87. In FE (→EEC) it is added to the previous slur in bars 86-87. The change of slurring in this place probably resulted from the slowdown of harmonic changes in the final version and the associated introduction of sustained notes to the R.H. part, particularly b1. The version of GE is most probably a mistake – the long slur starts a bar too early, while the absence of the slur in bar 86 EEW is most probably an oversight.
Compare the passage in the sources »
category imprint: Differences between sources; Corrections & alterations
issues: Errors in EE, Errors in GE
notation: Slurs