from GDV both runs as MTM-TPTY Express only and at present they are using the same rake to run TPTY-DMM-TPTY special via Pakala-Madanapalle ....looks like the maintenance of the rake might got shifted to MTM hence they are just running this special...
now instead of taking rest at TPTY...may be its going to get extended till DMM via Pakala route so that one parking line will be freed at TPTY
will have to wait and see whats in store for this