Use the MDTools "Suppress Cavity" command to hide the construction ports on the part model before creating the drawing.
The command can also be used to hide any drill holes or angled holes that you don't want to show in the drawing.
Alternatively, the "Shrink Wrap" command can be used to suppress the construction ports and hide the internal details of the block.
The file will be saved as "FileName_Shrink-wrap". This part file cannot be used to create a drawing.