Copying Synced Audio

When linking more than one .wav audio file to a .braw file, the connection to the second file is lost when copying the bin into another project.

Sample:

Video_A.braw with Embedded Audio 1

Audio_1.wav with Boom

Audio_2.wav with Lavmic

Auto Sync by Timecode =
Video_A.braw now has 3 audio tracks.

When copying Video_a.braw into a new project via "export bin" function,
3 audio tracks still show up but only Embedded Audio & Audio_1.wav is played.
Connection to Audio_2.wav is lost/ muted.

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Note: It would be great if it would be possible to batch unsync Audio from Video files.