text is appearing behind image in header

I have an MS Word document with images and text. In the Word document, the image is sent to back, and assigned as behind text. However when converting using Acrobat 11, the text is hidden behind the image. As the text is the page number in the header, fixing this will require rearranging in every instance.

Is there a way to get Acrobat to follow the Word layout correctly - or, failing that, to multiple/batch rearrange?

Thanks

bruce