Using Xmedia Recode is even quicker if you simply convert the audio. Dolby to wav in a second or so. Then match them up in Premiere 2018. I think that the alternatives of rolling back to 2017 (which won't have dolby if from Adobe's app), or to a restore point, or installing WIn 10 or contacting support are more time consuming. Adobe should really have provided sensible answers for their customers.
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