Bug (possibly) Duplicate List Replace Method otherwise a feature request

When duplicating a method, the List Replace function duplicates without its contents. I don't know if this is intentional or a bug. Other method duplications seem to keep their contents.
It would be useful when duplicating the List Replace method for it to also duplicate all it's contents (the list of replaces).
I have a need for this as I would like two alternate versions of the same List Replace, one where I replace with a hyphen at the end of the replacements and one where I do not.
Regards.