Edits and deletions of copy alerts also fail silently when the user doesn't have the needed permissions (UPDATE_COPY_ALERT and DELETE_COPY_ALERT) or has the permission but not at the needed depth. (For example, if permissions are granted at the library level and Library A tries to delete Library B's alert it appears to succeed but doesn't actually delete.)
Edits and deletions of copy alerts also fail silently when the user doesn't have the needed permissions (UPDATE_COPY_ALERT and DELETE_COPY_ALERT) or has the permission but not at the needed depth. (For example, if permissions are granted at the library level and Library A tries to delete Library B's alert it appears to succeed but doesn't actually delete.)
(Tested on 3.1.7 with the fix for https:/ /bugs.launchpad .net/evergreen/ +bug/1783421)