I decided to make a push for the Alani capital thinking that maybe if I defeated them they'd offer better terms or their client states might rebel. This is a screenshot of the game when I took their capital.
Notice that the Iberiae have disappeared and become Alani. That happened the same turn I took the Alani capital. Also note that the warscore is now +257 in the Alani favor even though I've taken 7 territories since the prior screenshot.
I think the problem is the current version of the game is not marking captured client-state territory as Occupied when captured by the player. It is marking captured player territory as Occupied when captured by the client-states or the main enemy. That means if the main enemy or client-state then retake occupied territory it is added to the Warscore pushing the number artificially high. That's just a guess but if you look at the game file you will see the territory I captured from the Iberiae (Lazyia, Iberia, Artansiga) without an 'Occupied' tag. The territory I captured from the Alani (Abasiga, Corusia, Suruba) all have the 'Occupied' tag.
Game file ---- https://1drv.ms/u/s!AgGAmxVH_SvUgYhVOF9qnb9zc9yGnQ
I've played the game forward from this date another thirty years but eventually had to concede. The Alanis never offered a single peace treaty during the entire time and I didn't sign a treaty as they'd be ruinous.
