DRAUTO

Hi, we have a primary and secondary server, that we look after in Informix 11.5FC6. Our client wants to take down the primary for an hour this weekend. I see DRAUTO is set to 1 which I have read that means the secondary will switch to primary mode, and then revert back to secondary when the primary is rebooted, and will transfer any transaction records back to the original primary so they are logically consistent. Are there any gotchas that I need to be on top of or will this work as desired? Ie, if they shut down the primary server, will the secondary just take over without any other changes needed, and then when the primary comes back up an hour later, it will receive the logs, and the original primary will pick up being the primary and the secondary will go back to being the secondary and away it goes??? Thanks in advance for the help. Benji