FSN Device Swapping Primary & Secondary?

We have a Celerra NS-G8 that has two FSN devices (fsn_cifs and fsn_nfs) both with a fxg (fiber 10GB) and cge (copper GB) connections. Problem is I just found out that the cge was mistakenly configured as primary and fxg as secondary. We already have 10 interfaces configured for fsn_cifs (with CIFS servers configured for each) and two interfaces configured for fsn_nfs.

Is there a way to permanently assign fxg as primary and cge as secondary without having to delete all the interfaces, delete the FSN, recreate the FSN with the proper assignment and recreate the interfaces?

Thanks!