I want to apply for a Ph.D. position in a US university (X) this year. Last year I started the application but did not finish and submit it. But my recommenders already sent their LORs and its already in the portal. Now this year as I want to apply again, I want to change one of my recommenders (A) because I think the new one (B) knows me better and can write a better one for me. Also, I heard A always writes a general LOR so it will not add much value to my application.
What can I do now? I hope the recommendation letters are in the portal but as the application was not submitted so the admission committee did not go through it?
Should I use my alternative email for the new application? Will it work?