Export to PDF result in very bad graphic inside the PDF

I have made a solution I have used since version 6 and for many reasons I have not upgraded since version 8.5 before now.

In version 6, 7 and 8 I have exported invoices to PDF from within FileMaker.

In 7 and 8 it was all automated so I now just click a function that save the file and it works perfect.

After the upgrade the graphic got very bad.

I used WMF-files for my logo as it was the best option on PC.

It made a crisp and sharp logo but after the upgrade that is not working anymore.

I have tried to change the file type to png, jpg and other that was accepted but all with the same output - bad graphic.

When I print the file it looks just like always so I expect it is the settings for the pdf that has changed but I cannot find where I can change this.

I tried with different PDF settings in my Adobe Acrobat but it don't seems like FileMaker use that at all.

Any idea where I can make the settings for PDF made from FileMaker ?

Any help will be very much appreciated.

Thank you,

Jens Peter