Thanks for your answer. As you said, I sent an enhancement request on Jira (https://issues.apache.org/jira/browse/PDFBOX-1614).
I try to fix it on my own but actually I failed. I made a FakeFileInputStream extending FileInputStream which only manipulated an inpustream to trick the saveIncremental, but It didn't work... I'd like to know if you have any idea how to fix it and if it could be easy to do or if it requires to have a deep knowledge in PDFbox. Best regards, Thierry boschat This message contains information that may be privileged or confidential and is the property of the Capgemini Group. It is intended only for the person to whom it is addressed. If you are not the intended recipient, you are not authorized to read, print, retain, copy, disseminate, distribute, or use this message or any part thereof. If you receive this message in error, please notify the sender immediately and delete all copies of this message.

