How do I hide a floor opening below a raised wall

[ktaczala]

If you look at the attachment,  The selected wall is raised to close up the attic area of a catherdral ceiling where it meets a flat ceiling.  Looking at the floor you can see a hole from the wall.  How can I close up the hole and cover it with flooring?

[ktaczala]

Never mind, I just deleted and re-created the floor. All is well.