Internal transfer

Has anyone transferred internally at their place of employment? I have worked on a surgical floor at a great hospital for 2 years (1 as a tech 1 as an RN). After 12 months in your current position you are allowed to apply for internal jobs. I applied for several and got an interview in my hospitals GI clinic. I had 2 interviews. Today I had one with the nurse manager who said she would like to call my current boss for a reference. My boss should have no issue with me, I have always gotten good reviews. I am just wondering if I should call my manager and tell her I interviewed BEFORE the new manager calls. She told me I have the position as long as I get a good reference. This is awkward, I don't want to burn bridges and I want to do everything right! Anyone have advice?