All views from all sections of the system have the possibility to export apart from Client Payments and Provider Payments in Smart views. It is possible to export those in "Old" views but not in Smart. After cheking with the helpdesk, it's not a bug, it's a missing feature which needs to be upvoted first in order to get made.
So, I would like to suggest a feature where everything is exportable even from the Smart views and including data from the tabs Client Payments and Provider Payments.
Customer support service by UserEcho