A macro to disable the Find function can be as simple as:
Code:
Sub EditReplace()
MsgBox "Go away!": Exit Sub
End Sub
Disabling macros when the document is opened can easily circumvent that. And, as I already said, there are other methods can be used to replicate content without the need for copying & pasting. For example, using an INCLUDETEXT field, then unlinking it, or using another macro that bypasses the user interface.