Hi Ellie,
A few questions, apologies if you've considered these already:
In ~/.rally/tracks/testout/, do you see json files for the indices you expect (both the index settings and the data)?
If there is not sensitive data, can you please provide here the generated index JSON file, and the top few lines of your corpora (<indexname>-documents.json) in ~/.rally/tracks/testout/?
Also, is the cluster you generated the track from on version 6.8.0? Are you still using Rally 2.0.4 per your other recent post?
Thanks,
Rick B