If the copper is a connector, you will not have a solder mask on top and not re-sizable. If you place it as a logo (image), a solder make will be placed on top and they can be re-sized.
Try this: place your image as a logo... place the connector that connects to it on the board. Draw a trace between the connector the will be connected to your image and some other connector (any connector), doesn't make any difference. Now, put a bend in the trace and delete the section on the trace form the bend point to the other connector by right clicking on that section and select "Delete Wire up to bend point. Now you have a trace that goes nowhere. Click your mouse on the the end where the bend use to be and drag it on to your image. You should have a completed circuit to your image... but the connector will not turn green.
Copper is copper... what ever appears on you drawing will be etched on your PC board.