Can widgets with settings be moved from one launcher to another?

I want to switch from ADW.Launcher to GO Launcher Ex but want to maintain my desktop layouts and widgets. Is there any way to move or copy widgets from one launcher to the other so that they have the same configuration? I've found that my Circle Launcher widgets could be copied easily as they have their own configuration backup and restore mechanism, so I could back a widget's config up in ADW.Launcher then simply add a new widget in GO Launcher Ex and restore the configuration and the widget was just as it was in the other launcher. Unfortunately other widgets don't provide a nice mechanism like this.