Error in the image when convering Word document to PDF
We are using Adobe Acrobat XI Pro at work to convert Microsoft Word documents to PDF format.
Recently we observed that when Word document contained graphs (e.g. from Microsoft Excel) the image was not displayed correctly in PDF and portions of image (e.g. axis and bars from column chart) were simply missing. The other text on the page appeared correctly and Acrobat did not display any notification about an error in the conversion process.
Even when image was converted and embedded in Word as Picture (enhanced metafile) same error occurred.
Is this common error with Adobe Acrobat XI Pro? How can we avoid this in the future?
Thank you for your help.