From the musical point of view, the version of JC seems to be very dubious: the indication [con] 8 - - - is probably written in a wrong place – it was supposed to include the entire bass progression in bar 4. However, most probably we are dealing here with a misunderstanding of the corrections of the entire introduction (bars 1-8) written in a short cut manner in [AI]. The same applies to the version of EF.
In EF there are no rests at the end of bar 4, as the phrase ends with a crotchet (in the parts of both hands).
Compare the passage in the sources »
category imprint: Differences between sources
issues: Errors of JC
notation: Pitch