I contacted AIR Kurseong just now and the info is that they are back on SW from January 1, 2019 after being off air (on SW) for some months.
Currently they are on air for the morning transmission only on 4895 at 0055-0400 (Sat Sun 0430).
After about 10 days they will be on in the evening hours also on 4895 at 1130-1700 (Sat, Sun 1741)
After about 20 days they will be on the daytime frequency of 7230 at 0620-1030
The transmitter is of 50 kW but it is being operated now at 30 kW
Jose Jacob, VU2JOS
National Institute of Amateur Radio