A job (aka class or role) is a specification used to define a player character’s skills, abilities, and stats.
The freelancer became a prereq job.
The magic jobs were renamed to emphasize their similarity.
The magic jobs got a third stage in their tree.
Stareomancer became the much less magical-sounding Ranger.
Freelancer became Adventurer, which shifted over to a prereq for the magic jobs. Their third stage was removed. (The fewer exclusive jobs, the better.)
All jobs were normalized to have a level 3 prereq.
Merchant and Alchemist lost their Mir-exclusive status, and became part of the Adventurer tree. (Again, the fewer exclusives, the better.)
Page was a new job added as the first stage of the magic tree. It then branches simply with each player character getting their own variety of Channeler.
Copycat became Sage.