How to successfully ingest usable MTS in Prelude?

I'm using Adobe Prelude CC for mac. Try to ingest raw MTS files then there is no audio in the timeline. Then I find "Prelude Help" knowing that "Raw MTS files cannot be logged in Prelude."

So I follow the "When using AVCHD files, ensure that you maintain the folder structure.", trying to ingest the original AVCHD file, but there is still the same issue that even though MTS can be ingested in the Prelude，but without the audio in the timeline, like this:

Then events under Prelude show that:

Then I try to select transcode MTS file into MOV, but then there is another problem shows that:

The Adobe Encorde has been successfully transcode the MTS to MOV, but it couldn't been send back to Prelude.

Then I try to ingest the transcoded MTS manually (which is MOV file now) into Prelude, which is could work.

So I'm so confused in what way that I could use MTS directly in Prelude? Or if my installation of Adobe prelude so how went wrong? But It's totally ok to use MOV in my PL.

Please reply me ASAP, I'm on fire about tons of interview clips to sort out, it's not possible that I have to transcode all the MTS files into MOV, then manually ingest to PL.