I've read a lot about SRS over the years and I don't see it mentioned often one way or the other. I always thought it was left intact and the exit tends to be around or just inside of the urethral opening. I mean all of these surgeons know that post op lubrication is a gray area at best, I can't imagine they would hinder people further.
But again, it can be difficult for some people to lubricate and maybe removing some glands like that could be the reason? I really don't know. I hope you find out soon!