A couple of weeks ago I gave 2 of my deep - 5 frame nucs, each a medium frame of small-cell all-wax foundation with 4 wires. I was just examining their progress with these combs; they quickly drew the foundation into combs, they are all small-cell, but they only completed the comb - to depth, the bottom 2/3 of the frame. The comb above this is hardly any deeper than the original foundation. The bottom 2/3 is now all sealed brood. Most curious is that the queen has just now decided to lay eggs in all the incomplete cells. I am expecting this will inspire the workers to complete the remainder of the comb as the eggs hatch. We will see.
I still keep a few frames with the large-cell foundation -- it is fascinating to compare small-cell brood with the large-cell, what a difference.