How to filter (dashboard timeline filter) using both Leads and Contacts module in Pivot View (Zoho Analytics)

How to filter (dashboard timeline filter) using both Leads and Contacts module in Pivot View (Zoho Analytics)

Hi,

Currently I want to show the conversion of leads to contacts for a period of time (by lead source).

So I do a count on Created Time of Leads and also count on Created Time of Contacts.

For my dashboard I use timeline filter to switch the period I want to see the conversion counts.

From what I see, the count of leads is correct but not for the count of contacts. 

I wonder what I've done wrong. Any help is really appreciated.

Regards,