How to restore deleted calendar macro?

[akhabri]

We use Confluence 6.2.1 and haven had any issues with macros until a while ago. There was a monthly DB patching on the confluence server and we noticed that the calendar macro got removed all of a sudden post completion of the patching. We are not sure if patching actually had to do anything with that, but do not have any other explanation behind this behaviour. Looking for help to restore the deleted macro. Any inputs would be appreciated. Thanks! 

[Brant Schroeder]

Akhabri,

  Is team calendars still installed and enabled.  I would start there.  Ensure that the app is installed and that all modules are enabled.