Undo Changes within a Protected Word Document

[Nataler]

Hello

I have a user that has received a protected document (Word 2003) with 100+
pages and has made some changes to it (using Word 2007). Within the
document, it has tracked all the changes made and when they try to undo
previously done changes (undo struck words), the accept/reject a change
option is greyed out. Is there any way around this?

Thanks in advance.

 

[Nataler]

I had asked them that question prior to posting this problem, but will try
again. Thanks for your assistance and hopefully they will be able to provide
me with that information.