Installapp option during node federation

When you federate node to a cell, any existing installed enterprise applications are uninstalled as part of federation process. If you wish to federate any existing user-installed applications into the cell, you can specify the -installapp command line argument when invoking addNode or you can select the Include applications check box if using the WAS Admin console for adding new node. If selected an attempt will be made to copy the applications installed on the application server instance into the cell, but applications with same name as applications that are currently installed into the cell will not be federated into the cell configuration