New answers tagged migration
Assuming - and that's a big if - that your speech profile is user specific you could still try migrating but only migrating your home folder (e.g. via Time Machine or from Mac to Mac) instead of the full system.
Convert to the internal drive, and as movies are converted, delete from external, and move there. If your drives are getting this full, it's time to consider an update. 3TB externals are sub $100.
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