On the instructions they attached to the secondary invite, it says:
"2. At this time, you are not required to upload transcripts or letters of recommendation, as this will be done internally using documents previously provided in CASPA or NCAS. Official transcripts submitted through CAPSA and NCAS must include verification that your bachelor's degree was awarded.
Applicants admitted to the program are required to send official transcripts from each institution attended. If admitted, you will be provided with instructions for mailing official transcripts directly to the Office of Graduate Studies."
Additionally, it says it again at the bottom:
"Enter all college or university-level institutions listed in your CASPA or NCAS application. Please disregard the follow-up with instructions to upload transcripts, as this will be completed internally by the School of Nursing."