Pretranslation does not replace unconfirmed AT translated segments

Even if I remove the AT translation provider from Project Settings and set "Overwerwrite mode: "Min match: 79%" and "Overwrite existing translations if better match is found", AT segments are not getting replaced by high fuzzies from my active file TM. When I go back to the Editor window and select those segments, I see high fuzzy matches, over 80%, in the Translation results.

Why did these >79% matches not replace the AT translations in the file? 

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