In your dashboard at the top left corner of your screen, click Contacts > Contacts.
On the left side of your screen, select All saved filters.
On the right-hand side of the screen under Created by others, look for a filter that’s labeled Customers Completing Product Registration.
Select Options on the left side of the screen.
Select Export.
You can choose to either export your customer’s data as a CSV, XLS, or XLSX. Select the file format you would like, and click Export. Once your export is finished, you will get an email of the file you selected.