If I'm working from an old file, sometimes I need to add to the definition in there. But there are new tables, so I need to turn off "automatically add new tables".

However, the only way to turn it off is to change to the tables & views tab... which then adds all the tables you didn't want before you have a chance to turn it off.

It save a lot of time to move this option to "data sources", so I could set it before changing to the tables tab and I now have to find all the new tables and turn them back off again.