Is this using on prem SharePoint? Or online? If on prem, you could change that setting for InfoPath Forms Services. Or, you could set up your employee data so that you can leverage query fields to get back just the data you need, which is what I'd recommend. However, I see in your rules you are using contains to get the information for the employee from your secondary data source - we can only use equivalence in the built in InfoPath query fields.
Hilary Stoupa
