I often code new classes all in the .h file to get them working, then I create a .cpp later and have to move each implementation to the source file. It would be nice if I could do that in 1 click.
We are looking into adding the ability to run a refactoring command, including Move Implementation to Source File on several functions at once, selecting them via VA Outline, which would work well here. You could either select all of the functions, or just the ones you wanted to move:
The inverse would also be good - move from source to header - by putting it after the class declaration and automatically adding the "inline" keyword to it.