adding directory above in existing repository, side effects?

[Timothy Stone]

List,

We have an existing repository and an organizational effort underway  
would like to add directories above the hierarchy in place.

Existing:

/com/domain/app/Class.java

NEW

/prod/com/domain/app/Class.java
^...^....  new directory above

There is concern that we could do this but lose history. Can it be  
done without impacting the history? If so, how could this be done  
without impacting the history?

Many thanks,
Tim