Only one related list "Attached knowledge" is visible OOB in the Case formDescriptionThere are two 'Attached Knowledge' Related Lists available for the Case form, but only one will display when added. Attached Knowledge(REL:9d7c170acba7330016e9582df8076d7d) will display, but Attached Knowledge(m2m_kb_task.task) will not.Steps to Reproduce 1- Login an Orlando or later instance.2- Open a Case form.3- From Additional Actions, open Configure > Related lists.4- Select both the "Attached Knowledge" records available and save.Notice only one related list "Attached Knowledge" is available on the case form.This issue was not occurring in New York, where there was only one related list and it was visible on the form.WorkaroundThis is expected behaviour, as the recommendation is to use the new related list instead of the one on "m2m_kb_task.task". The workaround is to uncheck "Omit if empty" in the related list control, then the related list will get visible.Related Problem: PRB1429159