I have set up a sheet file that references a title block in paper space and references a construct file in model space. There are leaders and flow arrows drawn in the construct model. They appear okay when I go into that file. They also seem to appear correctly when I look at them in the sheet drawing. When I plot the drawing....I cant see the arrow heads on either the leader lines or on the flow arrows that are placed near diffusers.....any ideas why the leaders wouldnt plot?