This was such a historic train. Held the record for the longest running SF in the country when it was running between TVC and GHY while what is currently the Aronai Exp used to originally run from ERS.
They could have still run this from ERS itself, as you've pointed out the timings are quite suited.
If...
more... they wanted to address the demand from CBE, it should be done so by introducing new trains, not by encroaching upon existing well-patronized trains.