Due to a lot of customizations in IBM Connections you always have to check out some configurations files ( .xml ) with WSADMIN.
If you do not want to enter the “wsadmin” command every time ( like me ), you can create a batch or cmd file including the following statements:
wsadmin -lang jython -user wasadmin -password Passw0rd -port 8879
You only have to customize the drive and path for your DMGR and the password, save it on the desktop and you´re ready to go. I also uploaded the batch file I use on dropbox. Feel free to download the file here