CorelDRAW Sandbox Portal
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.
Objects with Lenses and transparency when exported to pdf from corel v27.1 (and old version old also) create issues. Sometime they are gone. Everytime inspection of each object is not possible from user. CoreDraw makers should take serious note of it. In their product video they have claimed that PFD Version X4 supports full transparency without any loss which is not true.