you have to open a MIDI track en FL and go where is says rewire the option for motif should be there (thi assuming motif is install properlly) on rewire go to the channels options and look on which channel the instruments is for example: "piano bank A ins 00" so in rewire option choose channel A or 1 and save the instrument in the motif as well in FL so next time you work on it the file is there.. try it and holla back