You may find in some cases, when you update a field in Phoneburner during a call that it is not updating in Zoho. The first thing to check is to make sure the field is available in the module you are using. ( If it is a contacts field and you are calling a lead, it may not show up )
Some fields in Zoho may be set up to require validation. If this is the case, it may block Phoneburner from updating the field.
Please send us the contact record name/ phone/email and the field you tried to update if you have questions about field validation.