I've recently been trying to run some events. I was upset to see that my locked (at the time, I've unlocked it so I can try to gain back the skill points) English Training has degraded to 90 so that Ranch Management can raise. All of my skills were locked, so that shouldn't have happened.
EDIT: Ok, so I went about trying to fix this. At first I unlocked both the wanted English training and the unwanted Ranch Management training skills. I trained a NPC rider, and all the skill points I was awarded actually DEDUCTED from my skill. I now have an English riding skill of 89.62%.
I then reset the unwanted Ranch Management skill, locked it and ALL OTHER skills to be on the safe side, and started training a horse. I am getting no gains what so ever. I took several turns just to be sure.
This stinks for me as English training is the MOST important skill for basically everything I'm doing atm.
EDIT AGAIN!: I got the skill to start rising so I can probably fix it now no problem. I've locked ALL stats now. Maybe you have to do that, I always thought that locking the ones you wanted to keep were they were was enough.