You have to do what you have to do in order to heal.
Yes, I also understand the missing important things. In fact, while I was in college (before I knew I had DID), I would have other students come up and tell me hi by another name and swear I had class with them. I would get my grades at the end of the semester and freak out because there were classes I did not remember taking at all! I even went to contest one and tell them I didn't take that class and they called the teacher. She called me by the other name and said I was in her class. She brushed it off that I must be exhausted.

DID can be a very confusing thing to live with at times. Keep on doing everything you need to do as a whole in order to get the help you need.