CAWs can, as always, be shared with others, for that, press Start for the Menu, and select the Upload Option.
Unlike before however, it seems that right now you can only upload your entire set of CAWs, all to a “Folder”, which is a bit limited in selection, besides the Key to the Folder is very annoying to write. Thus, by sharing your key to others, they can download all your models.
To Download, press Start for the Menu, and select the Download option, write the Code in the Virtual Keyboard, and Confirm. Now you should see all 17 groups with different characters, and you can download them to your groups.
If you want to organize your models, you are welcome to do it at any time, but beware that it could end up resetting some parenting already made, so try to decide how you will use the Tabs from the start.
CAW parents will likely be erased during download, but this also happens when you copy a CAW to another slot and delete the original, even if you add them back to normal, that connection is now gone. (Think of it as, CAW 2-1 has CAW 1-1 and CAW 1-2 as parent, you copy 1-1 somewhere else, then delete the original, now CAW 2-1 has no CAW 1-1 as parent. Even if you copy it back, the relationship is gone. But that’s just for CAWs, so if a child is born between CAW and Lu Bu, Lu Bu will forever be there, same for a child between 2 Main Character Officers.)
Do remember that you can unlock titles in the game, and all of them can be set to any CAW, even the ones you haven’t played yet, so make sure to get them to a good title, so they at least can be a bit more influential in a campaign. Also, any modification done to CAWs won’t appear in any active campaign, only new ones.