Just thought I'd post to say that I watched a house of mine go through the IDOC process the last couple of days with no wipe of the security settings. I only had one character on the co-owner list, but she stayed on the list and in the house all the way through the IDOC process. I wasn't able to log in this morning when the house fell between 7 and 8 am my time, but I did log log in before 7 am this morning and a couple of times late last night when it was in the "In danger of collapsing" stage to confirm that yes, she was still in the house and still on the list as a co-owner. She was even able to pull the moving crate out (but of course couldn't get into it to find out what one item I forgot to remove from it when I cleared out the house before closing the house owner account). I didn't experiment with trying to make the house public or grant any other characters access to the house. Just didn't have the time or really the interest to mess with it.