in A1 is one of the three only verbal indications in b. 1-20 (along with con forza in b. 15 and 
in b. 18). The number of other dynamic markings is also significantly lower – see b. 6-7.
The absence of the indication in CJ is an oversight – it is present in CK and IJ, based on [A2], just like CJ. 
in EL is an arbitrary change of Kolberg or the publisher.
Compare the passage in the sources »
category imprint: Differences between sources
issues: Errors of JC, Revisions in EL
notation: Verbal indications