I filed married filing separate and am now amending my 200812 return to married filing jointly and need to "zero" my return to allow for the FS-2 return to be adjusted on my husband's account. Do I need to move the RRC to our FS2 account or will that portion of the refund remain on my FS3 account since that was a one-time credit for 200812 only?

I am not sure what you mean by FS-2 and RRC. If you define these acronyms, I can then probably answer your qeustion.