If you are using the CLD cache option and you have moved one or more calendars to different back-end servers (or changed the name of the back-end server), perform the following steps:
Be sure that you followed the procedure for moving calendars found at:
Clear the CLD cache. See Clearing the CLD Cache.
The CLD cache will be out of date if you moved one or more calendars to different back-end servers. To refresh it, you need to clear the cache so it will be rebuilt.