NetFlow / Bridge Problem

Hello Dear All,

Short Introduction :

I have Mikrotik RouterBoard 3011UAS-RM 19" i need to use this device to control netflow in my LAN.
I have large MPLS network, on every company site we have MPLS router but… we haven’t any control on trafic,flow,bandwidth.
I haven’t access to MPLS routers.

So we decided to use Mikrotik set it in “transparent” mode as bridge and pass-thru all traffic on local sites before local router.

I it’s working very well, I can get statistics of overall upload and download.

But I would like to have more details about traffic, so I try to use WinBox → IP → Traffic Flow :

And I set target :

And now is my problem :frowning:

I can’t get correct any data in above configuration.
All Status is like this :
https://cdn.pbrd.co/images/H4ei45c.png

But if I set only like this :

I getting data but it’s incorrect, because Mikrotik taking NetFlow only from this interface :

And this data is not what I need.

I need this netflow data from this interface :

How do I do that ? This is a bug ?

Best regards,
Jakub.