Field captures — the photos, videos, audio notes and waypoints you record on a
ride — have always had two homes: the phone that took them and the server they
sync to. Since June, the Library has been smart enough to stream a capture
from the server when its local copy is gone, so deleting data to free space no
longer dead-ends a session. But you still couldn't say what you actually
meant: "keep this, just not on my phone", or "I don't want to see this in my
library any more — but don't destroy it".
Today the session view grows three storage actions that say exactly that.