Why would it matter what your previous job title was? Why would I care if your previous job title was ‘Grand Vizier of Khyrgistan’? Can you do the job I want you to do now?
If your previous job title was "Doer of a Thing" then a prospective employer is more likely to consider you for a job doing the same (or similar) thing, as it shows you have prior experience doing a thing.
No, it shows that you previously had a job title that calls you a doer of things. I find that these don’t generally correlate with ability to actually do those things.