Changing to 802.1q trunks

I currently have four physical ports on our ASG-320 (running V 8.3) that are connected to four ports on a Cisco switch configured for multiple VLAN's. Each of the ASG ports is for one of four internal VLANS.

I want to change the four physical connections to one 802.11q trunk between the ASG and the Cisco switch, keeping the same DG's, IP.s etc for each VLAN.

Is there a simple way to do that without destroying rules, etc. If I delete the port for VLAN #2 and then configure it on the 802.1q trunk for VLAN #2, will everything pick up, or will things have to be rebuilt?

Thanks,