Although some sites claim that it is possible to convert PDF documents (probably with Visio diagrams) back to Visio's VSD format, it is highly unlikely. What they offer is export to JPG/PNG which you can import to Visio as object.
At best, you could create a picture of the diagram and use it, but you won't get the Visio data back from PDF.
This conversion entry was verified by us and conversion was flagged as wrong or not possible.
Usually this happens when the conversion would try to convert different types of data between each other, such as audio to image, or it is not possible because incompatibility between programs, caused by closed file formats, very limited support etc.
If you find entry that you feel is flagged as bad wrongly, please tell us in the discussion below with as much as information as possible so we can fix it.
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