Plot Names will revert to the last saved state.
Option 1: Manually select and clear the plot names and then re-save the vi. Whenever the vi is loaded, it will revert to this (cleared name) state.
Option 2: Programmatically force the names to clear. At the beginning of the program, wire empty String Constants to the plot names. You'll need to do this for all plots by first setting the active plot, then clearing the name. (see attached example)
2006 Ultimate LabVIEW G-eek.