As in this screenshot, I accidentally deleted the “joining face” of a pull operation, and want to restore it. As you can see on the right side of the object, the join is a “single face” all along the curved edge of the extrusion (seen on the right side of the object).
When I try to join the two faces again (left side of the object), I can draw lines along each segment, but then it creates multiple faces, not a single face. How can I restore that face properly - i.e. make the left side look like the right side?