I am trying to place an .ai file containing Opacity Masks into InDesign. However, in InDesign the Opacity Masks are not displayed as intended. Any ideas or checkboxes I might have missed?
Here's the object in Illustrator: (its a simple red square with the "stamp border" outline that is clipped via opacity mask)
And this is what the placed .ai file looks like in InDesign:
I know that there are ways of constructing the stamp shape in Illustrator without using Opacity Masks – I would prefer to keep the edges live though, to be able to edit the "cutout"-radius.
Any pointers in the right direction are greatly appreciated.