Stick to one thread, please.
I am with Mr. Hill, you should give more details as to what your problem is and what your status is.
I know you have a SLC 5/04 and you want to preserve the program and configuration. With so little details we could toss out different methods and fixes all day and never hit on what you really need.
Are you a programmer or someone familiar with PLCs? Do you feel confident in your abilities to follow the upload/Download instructions? Are you wanting to do this yourself or contract someone? Do you have a computer with the correct software and cables? Does you 5/04 have a memory module. Are you pressed for time?
Roger