If the campaign data that you want to import--such as keywords or ads--is in a spreadsheet or another online advertising program, such as Google AdWords, you can import it into Bing Ads by using Microsoft Bing Ads Editor.
When you initially create a Sitelink, Location, or Call Extension, you must include the campaign and ad group name. After creating the extension, you can go back and delete the campaign or ad group association.
When unassociated Sitelink, Location, and Call Extensions are downloaded from Bing Ads for the first time, they get successfully downloaded to the Bing Ads Editor's local database, even though that are not shown in the Bing Ads Editor grid.
When you import the same unassociated Sitelink, Location, and Call Extensions again, the download summary page will display these items as Skipped because they are already downloaded in the Bing Ads Editor's local database. However, when you download the details of the skipped files from the Import Completed summary page, these items will not be shown.