Hi, You can use Arc to do any thing. Track ,boardoutline and others. > it never connects pads together. It can connect your pads, but the Ratline can't be removed auto. If you need to use Arc, you need to suffer the **un removed Ratline** now. :) . And will kill this soon. If your Arc's two endpoints are connected the pads like the below image, we are sure your PCB is no problem. Don't forget to do some **DRC ** frequently. 

OK, cool! Thanks. That works for me for now!