I have originally written a letter of intent to X school which I was waitlisted at, which was confirmed and added to my file. Soon after checking, an update on the applicant portal stated that the school does not accept update letters, letters of intent, etc, in big bold red letters which was not there when I originally sent it. I guess too many people were sending letters, it's an awesome school.
Here's my dilemma. I since interviewed, got waitlisted at Y school and during my interview, I was so impressed and found that their mission was more closely related to my goals as a physician. It felt like a completely better fit for me and I was considering sending them a letter of intent. I want to make it completely clear that If X school never posted that update, I would NEVER consider sending another LOI. I just don't want the one letter I sent to that school to be a waste.