Would it be possible, on the next version of B4J, to add a 'Save As' option.
I often edit existing programs to try new things, and when running them, you basically lose the original.
With a 'Save As' option, you can modify an existing source and save it as something else, thus keeping the original code.
It was discussed several times. A project is made of many files. Changing the name of the main project file and keeping all other files will only lead to confusion.
The correct way is to choose Export as zip and unzip the package in a new folder.