Does not support native Transparency while exporting to PDF (Prepress) Issue

While exporting to pdf for printing where live transparency is needed.
Acrobat version 9 or DC (PDF Version X4) some times losses/changes some lense effect (transparency give to vector or raster objects). Sometimes coreldraw does not export these objects well which results huges losses in printing. (Most important feature for all prints shops, presses or pre presses.