Clan parties currently donate prisoners to your own fiefs. They used to sell them. This does create a problem as either way is good and bad, I wouldn't mind having prisoners in my dungeon so I can take them as try to recruit later, but if clan parties dont sell them then getting roguery is very tough. I've already mentioned this but there should be an option for us to decide whether our clan parties sell them or donate them. With the lack of that function clan parties should be selling prisoners for roguery as if we want prisoners we can take the time to go through each party and take the prisoners we want before we hit town, so either we need the option or put it back where clan parties sell prisoners when visiting fiefs