Struggled with this for a while.
I use 'Save Project' using the latest 'TPS6598x Application Customization Tool'. In the dialog there is a 'Display as:' box. However, if I decide to change the name, it doesn't work. It keeps the old name the next time I load the project. I can't even use the 'Project->Import Settings from Project', when I do this I get the previous name. I can't find a way around this, I can't change the display name once it is set the first time.