[Embedded EPS Vector file gets exported as Rasterized element]

Hallo,

I need help.

I created some stuff for printing press on the iPad version of the designer. 

There are some eps files embedded. When I export a pdf, everything gets exported as vector graphics, except the embedded eps files.

Those eps files are vector files. When I double tap on the files I can normally edit them within the Designer. 

Can someone explain the behavior to me? I need everything being vector graphics. 

 

Thanks

Nico