[robotnoises]

Fun story, I just found out yesterday during my annual performance review than I am a Senior Software Engineer. No, not a promotion, but rather I have always been one. It was simply an HR mistake that my title did not reflect it and no one realized that I didn't know.

So to answer the original question: it is impossible to know.

[jajern]

Or, rather than have to give you a promotion HR said, "hey, let's just make them think they were always a Senior Engineer this whole time!"

[citizens]

Not quite the same, but I found out a few months back that when I was promoted last year HR wrote it down as a demotion.