The Kurzweil's mainboard has a very small amount of RAM to hold your current samples..
Even when you add more SAMPLE RAM - that RAM is used primarily for playing the sample itself and not for storage. In order for you to keep the sample tha you loaded to stay in your program menu - you must save this data to storage device - either a hard drive, ZIP, or JAZZ drive ..
So in other words, each time you turn the machine on you will have to reload your sample data for use...