Forward and back slash in computer language is usually a command so a comma has to be used in the new software

eg. 1/17 Smith Street should be entered as 1 17 Smith Street

Also when searching listings, do not add any comma's, slashes or non numerical characters. Searching for 1,17 Smith Street, you would use 1 space 17 smith street or just 17 smith street then all the addresses with that will come up