To set your own preferences as the account default, click on Collapse Settings.
Then under Search Setting, select your Collapse Setting. Then, click OK to save.
Under Collapse Settings, select your sorting preference: by Most Recent or by Earliest date.
To export collapsed results, there will be an additional selection for Export Options: Representative Patent Only.
Representative Patent pertains to the first or visible result on the search results page once the collapse feature is activated (refer to the image below).