I created a designer file with multiple artboards (different sizes). To produce all images from de different artboards I open the file in Publisher and export to PNG, didn't save the file.
Now when I open the file again in Designer, there's only artboard vissible???
Try again in Publisher and al the artboards are there (as spreads) so they are still there!
But I like to edit my file in Designer, so what's happening??
Jeroen