Very thorough interview here at BWBK where Jon discusses his role as producer on this disc and what he was wanting it to sound like (like a live band that's been touring it's ass off). I didn't see Morrrisound mentioned at all in the production credits.
http://www.bravewords.com/news/216928
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Credits listed at: http://icedearth.com/discography/plagues-of-babylon-0
PRODUCED BY JON SCHAFFER
MIXED BY KEVIN PAUL AND JON SCHAFFER
MASTERED BY SASCHA BUSY BÜHREN
ARTWORK BY ELIRAN KANTOR
LAYOUT BY CARSTEN DRESCHER FOR MEDIALOGISTICS
RECORDED AT PRINCIPAL STUDIOS, SENDEN, GERMANY
ENGINEERED BY JÖRG UMBREIT & VINCENT SORG
ASSISTANTS: TONI LOITSCH & HANNO LOHSE
Schaffer also said somewhere that he spoke to Morris by phone / text many times during the production of the album and got some bits of advice, but that the main reason he produced it himself was because their tour schedule dictated it had to be done in Europe rather than doing it at Morrisound, but he anticipates working with Morris again at some point.