In addition to the info from trsundstrom, be sure to send all of your new data at the same time. If you try to create lists one at a time and upload , the last load will overwrite previous data. The best way is to plan your data, create your lists (up to 20) and send it all at once. Once the data is in memory and working correctly, save it to one of the V-Scan folders. You can have 20 folders, but you can only listen to the one in memory. The V-Scan is like a "parking lot" for other systems and can be recalled easily from the keypad.