I am not familiar with the KN1600, but maybe this will help. The amount of time that the keyboard will hold data is in the manual. It is listed as Backup Memory and Performance Data. This may be part of the problem.

I keep all the user areas data in my keyboard on a SD card or in your case a floppy. Each time I turn my keyboard on I load the data from that disk.
Memory panel
Memory sounds
Composer
Current panel
Pads
Favorites
These are my basic settings. When I load a disk from another source these settings may be changed. When the keyboard is turned off for a period some data may be lost.

This may be more than you have asked for, but I hope it helps.

John C.