How can I copy my content from one help center to another?
A Guide admin can manually copy each article and paste that article into the desired help center.
Alternatively, a Guide admin can create a custom script that uses the help center API to copy content over to a different help center. For further details, see the article: Migrating existing content to your help center.
Finally, there are many Zendesk partners who can assist with help center or other data migration for a cost.