Microsoft Office SaveAsPDFandXPS Addin and transparent images

A user complained about the SaveAsPDFandXPS addin functionality today, because there was a problem with transparent images. The transparent part of the images was converted to black instead.

After a google search I discovered that if one enables the option to create a PDF/A file, the above problem appears because transparent images are not supported in that format.

After disabling the option for PDF/A everything worked great.

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