I think the update where disconnected territory is deleted is a good thing, but I do think that if the country has access to some sort of coast, the territory should still be owned. For example, I had a game running where a nation conquered all of the Mediterranean, but then lost it after some unlucky revolts and wars. The country was based in Spain, but also held all of the Anatolian Peninsula. Kind of Like how The Byzantines kept Southern Italy despite it not having a land border. I just think that would be a cool addition Maybe you could have an option to turn that on and off?
Thank you