Move header file without moving implementation file

Is it possible to move just the header file to a new group without moving the implementation file along with it?  If I create a new class the .h and .m are put into the same directory.  Out of personal preference I like to put my header files into their own group, but if I drag the header file then the .m gets automatically moved with it.  I can manually create each file in the location I want, but it is more of a hassle than just dragging the .h file around.

Thanks,

Paul