Current behavior of import from xml:
immcfg -f <xml file>
If an item already exists, the command will be validated and skipped if the result is acceptable.
There is no ability to update objects from an xml file in the present behavior.
So, this ticket to introduce new option --overwrite, it's only applicable with -f option.
That allows users to update objects that already exist in IMM.
The option --overwrite is disabled by default.
immcfg --overwrite -f <xml file>
immcfg will replace attribute value if the object already exits