Reference, Hiding line styles

Hi Everybody,

I am using Microstation Connect Update 6 version 10.06.00.38.

I have a view referenced into a drawing border, I have used a Display Style which has a Display rule to hide line styles 1,2,3,4,5,6,7 [basically anything which is not a solid line] However there appear to be some artifact still visible from certain elements.

   

With the above images the vessel is drawn with solid lines and dashed/ dotted etc line styles hidden. Both are referenced view set into a border in the design file However the engine [which is dashed] still shows in the referenced view on the left. The engine is pretty detailed with 9826 elements in a group set to a dotted line style [default number 1]. All other lines which are dotted/dashed etc are properly hidden. This happens fairly reliably with complex groups of elements e.g. engines, gearboxes etc.

Any thoughts as to why this maybe happening and how to remove the unwanted visuals from the coloured in reference?