There is no doubt that the more vivid tempo is valid from the new phrase. The fact of placing the added in a proofreading of FE (→GE,EE) indication already at the beginning of bar 21 most probably stems from the fact that the bar is the last one on the page in FE and the inscription started in the middle of the bar, hence in the place, where the indication is to be applied, simply would not fit.
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category imprint: Interpretations within context; Differences between sources; Editorial revisions; Corrections & alterations
issues: Inaccuracies in FE, Authentic corrections of FE
notation: Verbal indications