I am working on setting up our Zoho Desk. I have the 2-way sync with Zoho CRM enabled. However, after I sync'd everything, I realized the first name didn't map correctly, and all our clients are missing their first name in Desk contacts. 

I can go into each contact and manually update from CRM, but we have hundreds of contacts that would need to be updated. Is there any way to manually update all contacts with CRM? Or at least bulk update a set amount at a time?

Any help is appreciated!