Export Tenant Level Search Configuration
To export the tenant level search configuration, a user with the Office 365 - SharePoint Admin Role needs to log into the SharePoint Administration Center using a web browser.
SharePoint Admin Center
https://[your subdomain]-admin.sharepoint.com
Click the More Features link the left hand menu.
Click the Open button under the Search heading.
Click Export Search Configuration.
Please wait... it may take a few minutes for SharePoint to generate the XML file.
Then save the SearchConfiguration.xml file to your local file system.
Export Site Collection Level Search Configuration
To export a site collection level search configuration, a user with site administration access or full control access needs to browse to the site collection using a web browser.
Then go to Site Contents > Site Settings.
Click Search Configuration Export link.
Please wait... it may take a few minutes for SharePoint to generate the XML file.
Then save the SearchConfiguration.xml file to your local file system.