How do i merge two zoho accounts?

How do i merge two zoho accounts?

I have two accounts and need to consolidate.

One is associated with my gmail address, on which i started using CRM and have data there. (I'd like to delete this account, but move the CRM data to the second account)

The second account is my work account, we host emails with Zoho and use the mail app.

Can anyone help with how best to transfer data from the first account to the second?
I've tried to change gmail account primary email to match the second account email, but the system won't allow that.

Kind regards

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