In an earlier version of Acrobat 7 and 8 have an option "Textual differences" which includes the fonts, style, typeface and text is used to comparing PDF documents without any issue. On Acrobat 9 and 10 have the similar option reading as "Report, spreadsheets, magazine layouts" and "Presentation decks, drawings or illustrations".
The above options mentioned in Acrobat 9 and 10 not working in complex PDFs during comparing documents. An attached error message has been popped-up while selecting those options for comparing document.
The option "Scanning Documents" is working well for those complex PDFs but the options were treated as an image of every page by default and marked all text as "The image was replaced". Due to this issue I was unable to use "Compare Documents" option in Acrobat 9 and 10.
It was working well in Acrobat 7 and 8 without any issue. I just wanted to know how to solve this issue in Acrobat 9 and 10. Any help immediately is much appreciated.