If you have already submitted a recommendation for an applicant and see another recommendation request from them in your account, the applicant has submitted a second application and requested your recommendation for that application as well.
Letters of recommendation do not automatically attach to multiple applications. If you wish to use the same recommendation for both requests, you can submit the same recommendation again, or you can contact the school directly and ask if they will make a copy for you.
We suggest contacting the applicant directly for clarification or any further details you may need about their second application.