In the Managed Domains section of the Domain menu, the primary domain name is displayed in the Domain field, and secondary domain name is in Alternative Domains field.
In this sample, the primary domain name is example.com , and the secondary domain name is www.example.com

Also, the shown URL on the Overview page is the primary domain name.

You can swap the primary domain and alternatives in the Change Attached Domain section.
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Swap Primary domain name and Alternatives

Step 1. Click on the pulldown menu under [Change Attached Domain].

Step 2. Choose the alternative

Step 3. Click [Update] button to save changes, and copy Record Names if you need.

Sample: 

Record Name: example.com
Record Type: CNAME	
Record Value: abc1234edf.on.getshifter.io

 

Step 4. Back to Overview page and make sure URL is updated.

Step 5.  Click [Generate] an artifact to apply changes.

Step 6. Access the new primary domain name to check changes.

That’s all!
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