Both of these are one-way, one-time specials. For such trips, engineering restrictions are usually waived with by having a supervising inspector onboard and running with special instructions. This is something that can be done on occasion, but for regular operations the engineering restrictions have to be fixed first.
Also, both of these trains are only ascending the ghats, never descending. I believe, the rake length restrictions came up mainly due to issues during the descent from the ghat. Since these trains don't, they may not have any restrictions.