My training says to address the emotional, mental, physical, and spiritual aspects to rewrite any event into a fresh supportive story.  The Records themselves remain the same.  You will retain all knowledge and wisdom of the events as opposed to removing or altering the information.  The dramatic changes are found in your mindset around traumas, events, thoughts, and conversations.  My personal belief is tampering with the Akashic Records themselves has a dangerous component, therefore something that I decline to do.