You realize that the BDM is the Buro der Marineintelligenz, which is the intelligence branch of the Rheinland Governemnt. Maybe take a gander here before you make yourself look bad by not reading up?
As an intelligence branch, their ZOI is pretty much Sirius wide. Also, the ZA created the perfect reasoning for the BDM to go there. ZA messaged Rheinland, saying Zoners are working with Order. Rheinland pretty much said they didn't care, but by doing so, made the Omicron systems on the BDM's list to gather intelligence as to what is going on out there. So they have every right to go there, every right to have an interest there based on what the ZA did inRP.
Also, since when do you not agree with ZA or are "no fan of the ZA"? Based on a post by Zoner-Trader, you as David Dir are in the ZA. So I'm confused. Which is it?