RathiD wrote:
Someone else can correct me, but I think when you scan, the information is updated for all characters, meaning you don't have to log in and scan with each character you have on that server.
Essentially correct. It would probably be truer to say that the information is updated for all characters of the same faction on the same server. If you have horde and alliance toons on a PvE server, you would need to scan both auction houses to update for all your toons. You would also need separate scans for other servers.
Additionally, when you first start using Auctioneer, the best way to build your database quickly is to scan twice a day (morning and evening) for about a week to catch the largest number of auctions. After your original database load is done, you can slow that down to once a day.
However, the list Enchantrix generates is based on the data generated by the most recent scan. Therefore, for a disenchanting run, you should preform a scan immediately prior to issuing the percentless command.