In CLI there are no naturals returning a1 and d2. The accidentals were also originally absent in FEcor, in which Chopin added both these two naturals and a third one returning f2 on the last semiquaver in the lower voice. Eventually, both FE (→GE,EE) and Ap have the correct notation.
Compare the passage in the sources »
category imprint: Interpretations within context; Differences between sources
issues: Omissions to cancel alteration, Authentic corrections of FE, Errors of CLI
notation: Pitch