Job titles at my company are a bit inflated. On top of that, I am moving from being an individual contributor with a high job grade/title into a managerial position. In order that it not be deemed a demotion, I will be given a title significantly higher than what my managerial responsibilities actually will be.
When I update my resume for my new role, should I use the actual title, or choose a more modest one that I think more accurately reflects my position?
My concern is that if I put my actual (inflated) title on my resume, my responsibilities and accomplishments will seem lackluster.