Export to DWG with fence discards some pattern


When I export to DWG some of my pattern disappears if I choose to use the fence as filter. I have the exact same settings in both cases, except of the fence. I also tried placing a gaint fence really far zoomed out, but it didn't help. 

Export with fence:

Export without fence:

How could this be? 

Running AECOsim connect update 4, equal to microstation connect update 11.