The 
(cautionary?) present in all sources before d1 in the 3rd L.H. figure is almost certainly a remaining part of the initial notation of the quavers in the 1st half of the bar, which were written down as d
1. After the notation had been changed, the was no more necessary, hence we omit it in the main text. In the same 3rd L.H. figure, one can see in A a crossed-out before c2. The accidental is not necessary, yet, due to c3 in the R.H., we give it in the main text. It was most probably for the same reason that it was also added in FE2 (→EE), also in the 4th figure. EE repeated in the 4th figure also the before d1.
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category imprint: Editorial revisions; Corrections & alterations; Source & stylistic information
issues: EE revisions, Corrections in A, Cautionary accidentals, Deletions in A, Enharmonic corrections, FE revisions
notation: Pitch