Homebrew PCBs

Can anyone help?

I produce a gerber file from EasyPC, run it thru Eagle Power Tools 
Grb2Scr and import to Eagle 4.11. The file goes in and is displayed 
OK. However, when I run outlines.ulp or mill-outlines.ulp in Eagle 
all the track and pads are outlined as separate segments instead of 
tracks and pads being outlined as continuous tracks. I know I have 
read somewhere how to fix this problem, but can't find the details 
anywhere. Would appreciate some help.

TIA
Roger