1. As per IRFCA roster - WDP4 20011 is called Baaz.
But why do some RFs mention 20015 and 20012 as Baaz?
2. Also, all 3 were initially with UBL and later now with SGUJ, but only 20011 had the dark blue livery. But now all 3 have dark blue livery. Were the other 2 recently modified?