the lord keep the land while turning?

[Bjorn The Dead]

when I was playing warband today, I turned a lord in to my kingdom from rodoks. suddenly, two of the rodoks cities became my kindom's land. the lord kept his fiefs while turning or is this a bug?

 

[Naikon]

This is a feature. Lords will bring towns/castles they own to your side when you recruit them.

 

[Bjorn The Dead]

thanks.