Gradient Export Problem

Gradient Export Problem

To whom it may concern.

I’ve experiment with the Gradient effect in CorelDraw X7 and everything seems fine. The moments I export it to PDF the Gradient effect don’t correspond to what initially looks like in CorelDraw. I’ve switch on the proof color option to see what is wrong, what I can’t understand is, the above Gradient effect button is fine, while the one below change?  can someone please help me to resolve this.