************************************************************************* ERRATA: Paper [ChenEndrissTARK2017] ************************************************************************* W. Chen and U. Endriss. Preservation of Semantic Properties during the Aggregation of Abstract Argumentation Frameworks. Proc. 16th Conference on Theoretical Aspects of Rationality and Knowledge (TARK-2017), July 2017. ************************************************************************* An aggregation rule has type F : (2^{Arg x Arg})^n -> 2^{Arg x Arg}. Near the beginning of Section 3, this is stated incorrectly, using Arg x Arg instead of 2^{Arg x Arg}. Following the definition of quota rules, the quotas for the weak and the strong majority rule should be floor((n+1)/2) and ceil((n+1)/2), respectively, instead of floor(n/2) and ceil(n/2) as stated. The proof of Theorem 4 (preservation of grounded extensions) should have pointed out that all arguments not explicitly mentioned in the proof are also part of the grounded extension. All of these points are corrected in the journal version of this paper (Artificial Intelligence, 2019), which also includes several additional results. *************************************************************************