Can the exportfs command be used to edit an exisiting export? In System Manager, I know you can make changes and save them, so there must be a command line equivalent. I've tested the -io and several other options, but nothing I've seen so far will let you replace an entry for a path with an updated entry for the same path.
Thanks resqme914! I just tested that with the simulator and it worked. I never found anything in documentation indicating that this switch would work with existing exports, but I see now that it does in fact work (it takes the original and adds a # in front of it). Thanks for the tip!