FYI.
If you publish your planning package to a Folder inside Public Folder in cognos connection
Example
Public Folder>Applications
and if you take the planning application offline, you will not be able to bring your application back online using the off line client.
when you click work online from the file menu an error will be displayed.
The workaround is to log in to cognos connection launch the contributor and click in the node, you will be prompted to bring
the application back online, this will work.
Publish to Public Main folder is not effected.
As of today no Fixes are available.