Trouble Importing Contacts from Zoho CRM to Zoho Invoices

Trouble Importing Contacts from Zoho CRM to Zoho Invoices

I followed the instructions to get an API key from my Zoho CRM account, then clicked on the "Import from Zoho CRM" link and input my key. 

I received a message stating that the import had been successful:

Customer records have been imported from your Zoho CRM account.

 but underneath it still says 

You have not imported any customers from Zoho CRM.

 When I go to view all customers in Zoho Invoice, I only have the test customer that I created in Invoice, but none of my CRM contacts. Any ideas?