We don't store multi-timbral objects in our architecture. However, you can save this information to disk by saving the Master table, which consists of the parameters on the Master, Effects, Sample, Song Mode MISC, and all 3 MIDI pages, including what program is on each channel. When you load the file with that Master Table, the multi-timbral configuration will be recalled.

When you go to Disk Save, you can scroll down to Master to save the Master Table. If any RAM programs are currently assigned to a MIDI channel, or the Current Song is a RAM Song (anything other than Song 1), or any other RAM objects are assigned on the Master or MIDI pages, the Kurzweil will ask if you want to save dependent objects. If you answer yes, all RAM programs, songs, keymaps, etc. currently being accessed will be saved along with the Master Table.

You can also do a sysex dump of the Master Table to an external device capable of recording sysex. dependent Objects are not dumped automatically along with the Master Table.