Interfolio- Letters of Rec

Hi everyone!

I am using Interfolio to distribute my letters of recommendation but I’m not sure if I can use the same letters for AMCAS and AACOMAS. I noticed that AMCAS has a letter ID for each author and wants that letter ID on each letter so they can match it with their application. Does that mean that I have to ask my recommenders to upload two letters, one with the AMCAS letter ID and one without it for AACOMAS?

Any input will be greatly appreciated!