It seems that there are differences between the following methods of copying content from course to course depending on the content we are copying:
For example, I was helping a faculty member who wanted to copy an end-of-course survey (Quiz) she created into all her courses. We trying Copying the survey (as described at the link above) and it was not available as a content item to select. We tried The Commons and she was unable to bring the survey into other courses (they did not show up on her list of courses). Exporting & Importing finally worked for copying the Quiz.
I also had issues copying an assignment containing a Rubric using the various methods: only the Assignment copied but not the rubric.
Does anyone have a list of best methods for copying content depending on the content we wish to copy?