I've been checking out my options on this run, and in the mission where you split the team I've found a possible issue with the inevitable rescue. I may have just missed the objective on my first run, but I could not find it, and had to restart the mission to try again, but on a recent run, it was Binding Blade that survived, and they got up from their spawn point, and started fighting as normal, leaving me unable to talk to them to finish the mission.
EDIT: Ooh, this one's a bit of a mess. I had West check up on Radiant Dawn, so I went in with four members of the squad. When I got to the split, I let the teammate split us up, and they sent both Blades and Shadow with me, and the Sacred Stone basically went off alone. When I found her (eventually) her text window read thus:
"You kneel down and check your unconscious team member's pulse... It seems like they're still alive, but barely. It looks like the others are breathing as well. The others are nowhere to be found!"
EDIT2: Wow, something *really* went wonky here. Not only was Sacred Stone considered 'lost' even though they're the one I found, but it also decided that Binding Blade was injured as well, despite the fact that they were with me for the Split the Team mission.