The Ad Simulator Tool gives the option to export the ad file you are currently working on.
This creates a csv download that follows the import structure for the Google Ads Editor. This CSV comes with everything you need to get your ads into the editor but if you want to edit it before hand you can, add additional fields like pinning, comments, URL paths, all the columns are there to be edited.
The Google Ads Editor can be downloaded here: ads.google.com/intl/en_uk/home/tools/ads-editor/
To import the csv you'll need to make sure the campaign and ad group fields are specified. These can either be existing account elements or new.
Open the account you want to import into. Use the import function from Account > Import > Import From File and select the CSV. This should start the review process where you can see the changes made to your account and accept or reject them.
And that is it, job done!