When I upgraded my 99 to 15 the upgrade went through OK. But afterwards I found that my night lighting program no longer worked. It turned out that the reason was that the On % was set to 0 for all my scenes that were converted. Moving the slider to 100% made the light come on but teh scene changes dod not seem to get saved. To resolve the issue I had to remove the scenes and add them again.
I have also noticed that I can create a scene and be able to click and control each device seperately but when I turn on the scene the devices controlled by that scene do not respond- why would that be?