Zoho Marketing Hub sync : "Organization is already integrated."

I want to sync my Zoho CRM contacts with Zoho Marketing Hub, but I'm getting a "Organization is already integrated." error. I have seen in this thread (https://help.zoho.com/portal/en/community/topic/organization-is-already-integrated-when-trying-to-integrate-mh-with-zoho-crm) that it is not possible for now to sync Zoho CRM to Campaigns AND to Marketing Hub. Is this still the case ?

If so, is there a way to transfer everything from Zoho Campaigns to Zoho Marketing Hub (Templates, Contacts, syncs, campaigns, etc.) ?

Also, is everything from campaign is integrated in Marketing Hub? It seems right, but I want to be sure before making any decision.

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