Specify the destination for the extracted data. Depending on your choice in the previous step, you can specify the following destinations:
When you extract an entire site, it is added to the target site/site collection as a new subsite. You can overwrite an existing site and replace it with a site that is based on the same template and has the same name. To overwrite an existing site, specify its immediate parent site or site collection as the destination.
When you extract an item, all of the item's parent objects are recreated in the target site/site collection. If the item already exists in the target site, new item versions will be added. If you want to resolve name conflicts in a different way (for example, overwrite the existing items), refer to "What to do with the Content Migration Package file".