this one also covered the whole stretch on 3-4 different days at different locations...it was at MFH-GZB, towards MB and some other location...yes trial loco is one thing...but what I believe is this must be going on in phases...CRS inspection was also due in early December...Twesh ne bhi kuch time pehle NR DRM ka aisa hi kuch update diya tha...so I think this definitely is a part of the CRS insp.