I think you always should comment all default config line (both for MPASM and PM, DEVICE and CONFIG lines) and then set your config fuses in your code.

Way more handy, because you don't need to remember each time which fuses you have hidden for a XYZ project using the same PIC.

Have a look at the following, post #1 and #5 are all you need for now.
http://www.picbasic.co.uk/forum/showthread.php?t=543