Import Products from NAV to CRM Through Connector Microsoft Dynamics

Hi,
I am using Connector For Microsoft Dynamics to import data between Microsoft Dynamics NAV 2013 and Microsoft Dynamics CRM.

I can successfully import the newly created products from NAV to CRM. But I am unable to import existing products data from NAV to CRM through Connector. I have imported the products using CSV file. But the Connector does not import even the updated products/data from NAV to CRM.

Now, I have 4-questions:
1. How to import the existing products from NAV to CRM through Connector For Microsoft Dynamics ? ?
2. How to import the updated data from from NAV to CRM through Connector For Microsoft Dynamics ? ?
3. How to import the updated data from from CRM to NAV through Connector For Microsoft Dynamics ? ?
4. How to import the existing products from CRM to NAV through Connector For Microsoft Dynamics ? ?

Thanks in advance...

Regards,