Back up for zoho subscription before an integration to CRM

Back up for zoho subscription before an integration to CRM

Hi guys, 

We have been editing our data on CRM regarding how we record these pieces of information on Zoho Subscription. We have updated the customer name, equaled invoice amount on CRM to subscription amount on Subscription. 

We're planning to integrate Zoho CRM to subscription tomorrow. Before doing that, we kindly wanted to have a backup of subscription such as; subscriptions, invoices, etc. How can we do that? 

What steps do you emphasize to pay my attention to? 

Kind regards,
Mustafa