I believe that BS 3 is modelled after bort 25, one of the Blacksharks equipped with the Abris upgrade. Not every Ka-50 received this upgrade, bort 23 being an example. Yet in spite of this, every photo of the Ka-50's cockpit (with or without the Abris installed) seems to feature a Datalink panel. This begs the question, how did the pilots use the DL before the Abris was installed? It is likely that they used the IT-23 like @Chizh's comment pointed out on the Russian speaking forums. Within the same comment it was also mentioned that the Abris was only used as a navigational aid for the pilots, not to display tactical information from the datalink. So it seems to me that the Blackshark is showing the datalink information and symbology in the wrong place, but I can't say this for certain.