Jens Schröter “Die Funktion der Herrenmahlsüberlieferungen im 1. Korintherbrief: zugleich ein Beitrag zur Rolle der “Einsetzungsworte” im frühchristlichen Mahltexten” ZNW 100 (2009), 78-100, at 79-80 in footnote 5, notes that the episcopal eucharistic prayer at TA4 is absent from some versions, and thus suggests that it might have been added to some versions of Traditio apostolica at a later date. The prayer is present in Latin but absent in Sahidic and the Axumite Ethiopic versions. However, turning to the rewritings, it was obviously available to the redactors of Testamentum Domini and Constitutiones apostolicae, though is absent from Canones Hippolyti. So we have to ask ourselves at what later stage this chapter was added, such that it might find its way to Italy, Cappadocia and Antioch within the time-frame. It is not as if a more convincing solution is fairly obvious, given the distribution of the chapter’s presence and absence, namely that it was omitted in the Alexandrian recension, and thus in the versions dependent on that Greek original.
This is yet another example of the knots into which those who seek to deny the Roman and early third-century provenance of Traditio apostolica tie themselves