Hi,
If you had done any theme related changes in the old development, you will have to adjust them manually in the themeing files like css(height/width).
If not, you will have to search for a note related to ITS which relates to this upgrade. Why the WEBGUI is not displaying my custom theme?
Also, try publishing the core ITS services "completely" once and test:
ITSMOBILE
SYSTEM
ITSGENMOBILE
ITSGENMOBILE4
ITSGENMOBILEXV