The course must exist in Moodle first.
Send a Jira request to VLE Team (Chariton ChatzicostisMarios Theodoulou) for the merging clearly stating course codes and in which course they need to be merged. i.e.,
...
MBAN Courses have a different method of merging with DL courses. Contact the LMS colleague for instructions or contact Julie Boyadjian boyadjian.j@unic.ac.cy or Irene Constantinou constantinou.i@unic.ac.cy.
Julie will note down the merges in the shared Google Spreadsheet. Make sure to clarify with her before merging.
Make sure you note down the merged courses for future reference.