When you output with rasterise set to nothing, any layer effects, transparency, blend range and colour adjustments are lost - so the work around was to group and duplicate all the raster stuff, rasterise on a new layer and output PDF with rasterise nothing which seemed to work but on checking over in Acrobat I was getting some unusual overprinting issues on vectors? I have a backup of the previous beta 1.7.0.4 and have run tests and it works perfectly as before it's just 1.7.0.5 --- I was enticed with the arrow head feature - LESSON LEARNED