How to refresh GUI elements after having applied DCI 1.5 PTFs

Document ID : KB000112622
Last Modified Date : 31/08/2018
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Some CA Dynamic Capacity Intelligence (DCI) PTFs have the following comments in SMP/E HOLD section:

                      * STEPS    TO    PERFORM *                    
After SMP/E work is complete, rerun customization job $05USS (located
on the CFHRSAMP library) with the replaced HTTPINST/HTTPINSTB element
(located on the CFHRDATA library) to apply the updated GUI elements.
Please see the CA DCI 1.5 installation guide for more information.

Customization job $05USS "untars" a file and install the USS part and the GUI: is a new USS directory required or the existing one can be used? 

If multiple PTFs have been applied, install them fixes in ascending order  but do not run $05USS.
After the last fix is applied, execute $05USS.
Reason for doing it this way is we deliver always the whole new GUI. If $05USS must be executed, this means that a new version (or revision) for DCI GUI is available.
Normally it is best to “untar” the files into the existing folder stucture in USS. In this way, the old GUI version will be overwritten with the new GUI.

The GUI and USS elements can be “untarred” on a complete different structure. But it this way the new GUI elements are on the new directory while the data like reports, policy and so on are in the old directory. Then all the references to the GUI directory must be updated, for example on the JCL for the Controller and on http.config.
A customer can do that but it is not recommended.
Additional Information:
CA Dynamic Capacity Intelligence - 1.5 documentation:
Job/Member $05USS - Install the USS and GUI components