In answer to a question

No, we're not rebuilding the loft!  They will finish what will be the new ceiling while the loft floor is still there....for convenience.  They will tear out the loft floor last, so that they don't have to mud and sand the ceiling on ladders.  You will understand when it's all done, but just imagine that the old floor is not there.  Where the can lights are will be the new kitchen ceiling.  Maybe it'd make more sense if you'd seen our house before.  I don't know.  I guess you can wait for the finished product pictures.