Wish there was more control over the NavData.db3. It appears that at any time all your updates can disappear. As I have found out, even backing it up doesn't seem to do much good, because RB software will refuse the backups and revert to old versions.
Maybe this is asking too much, but is there program that would allow me to copy and paste data from/to NavData.db3 in large blocks? Sort of like a spreadsheet, instead of just one item at a time using Database Explorer.
In that case I could keep my own list that I could paste back into NavData.db3 if/when my info disappears again.