Having just done two manual landings in a 744ERF with a NGFMC I can tell you it stayed in SPD until just AFTER touchdown (as in not immediately on touchdown) the FMA went blank and an EICAS >AUTOTHROTTLE caution resulted.
I had to manually override the servo motors during the flare until it self disconnected, I then cancelled the caution with the thumb switch (didn't need any surprises) and selected reverse.