Place callout behind active file

Hi

I've created a callout from a design file, and placed it in a drawing file. When I try to place annotations (purple lines) in the drawing file, they get placed behind the callout (slabs and wall) for the grey filled area. 

I thought it could have something to do with the update sequence, but as you see my active file is on top. 

Running Openbuildings (update 5).

Robert