That's a known issue when migrating skills. Basically, if you decrease a skill, the skills that scroll across the screen are the same as before. Only the skill goal changes, along with some random number that's supposed to represent how long until the migration is complete. Then seconds or years later, the skills eventually change to match the goals, but there is no indication that anything has happened. There's nothing for Lich to pick up on to know it should update the skills. All you have to do is type skills after it has finished migrating.