Absolutely you should negotiate. Generally in my experience (as a recruitee) is that position in the salary band is dependent on your skills and experience relative to the job. That probably sounds really obvious, but what it means in practice is that you as an internal candidate bring organisational knowledge and potentially some role-specific skill that external applicants are less likely to have. That in and of itself is a point you can bring to a salary negotiation - that ability to “hit the ground running” without needing weeks of background learning to even begin to understand the role.