In order to do that, you will have to hop through a lot more steps within Media Composer or create dailies with all BWF ISO tracks in a third party dailies app. In the latter, you bring in the master clips with all the ISO’s then use an ALE merge to create subclips of just the MIX track. Now when you match back you go to the master clip.
To create that in Media Composer, you need to export your .sync clips and reimport them back in ensuring that that source clip Tape or Source File (workflow will differ a little depending on which one), bring the files back in, merge the subclips exported ALE with all your important metadata back into those master clips. This assumes a AMA link/Source File workflow. If “Tape” is required, then you need to import ALE first, then batch imports the exported clips.
Michael