Hello Tom,
You can use an approach similar to the following to remove layers from the content stream:
https://groups.google.com/forum/?fromgroups#!searchin/pdfnet-sdk/layers/pdfnet-sdk/X4hRxzUWpdk/NiGoMsg6FGYJ.
Best Regards,
David Tippett
Software Developer
PDFTron Systems Inc.
Tel: 1-604-730-8989
Fax: 1-604-676-2477
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