Adjusting Assignement Due Dates
You can adjust your dates for your course in the during the Copy Course Process Links to an external site..
If you did not use the tool or decided you needed to adjust your dates more, this tool appears to nicely update all of the due dates for individual assignments and activities, as intended.
However, it does NOT appear to provide a way to change the availability dates for MODULES, which might therefore be overlooked. If others are using this tool, please remember to double-check the “Lock until” dates of individual modules, if you use them.