Problem with forwarding JPG on Client 2014 R2 HP1

We have a lot of questions about forwarding mails with pictures (jpg) included.

When I receive a mail with pictures and I will forward that mail with the attachements (pictures), the mail will be sent without the pictures. But when I send a mail with a document, it's all ok.

If I forward the mail as attachement, all of the pictures are inside and will be forwarded.

GroupWise Client 2014 R2 HP1

What could be the problem?

Sorry about my bad english.