This is what you are probably looking for as the reasoning these do not match up. The below is an excerpt from CIC's data dictionary found on Page 6. Pay close attention to the sentences at the end of the 2nd section here.
Relationships to other tables and data
The relationship of the data in the CallDetail_viw view to the data in all the other tables is very limited. Because IC only captures the last user?s information, it cannot be related directly to data in any of the other tables except in very simple environments. IC does not reflect any transfers between distribution queues and agents in the CallDetail_viw view or to any reports using this table.
Report Types using this data
Report types using this data include Call Detail, User Summary, DNIS, Account Code, Call, Call-Supervisor, and Supervisor Account Code. These categories of reports show simple interaction activity based on this data. These simple enterprise or summary activity reports will not be as complete as the interaction counts of Queue Period Statistics agent reports.
You should not apply the values stored in the CallDetail_viw view to user activity values for purposes where stringent control is required, such as compensation. It might not represent a user?s complete activity.