CLC-2017 (QA) Followup - Fix processing of triple major with concurrent enrollment

Followup to fix https://jira.media.berkeley.edu/jira/browse/CLC-2017?focusedCommentId=106654&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-106654 

QA branch version of #1425