I took over the administration of Zoho later in the lifetime at this company.  They have it configured incorrectly with every piece of data residing in Contacts/Accounts.  Leads was never used.  

I need to take a large chunk of contacts with the associated notes, activities and campaigns and import them into leads.  

Will exporting all of the fields and re-importing with "migrating from another CRM" as a lead will work?  Can the associated tasks, campaigns, emails, and activities be imported as well?  Will they attach based on the email address?

Any thoughts suggestions very welcome.  

Thanks!

Leah Edwards