Following a discussion on irc, we installed the staging db without specifying a collation.
This resulted in configuring `en_US.UTF-8` on staging db (or even on the provenance server).
This creates sorting discrepancies down the line .
This should be fixed.
The M.O. is to create a db dump, scratch the db, create a new one (with the proper collation), finally restore the dump on new db 
 Top of my head following the discussion, this needs proper documentation source link