I've been using the old app mostly, but had the new one installed too. In the last couple of weeks I've swapped, so still have the old one installed but am primarily using the new app. To support this I've removed all my routines and just have scenes. I've just realised I've still got SHM in ActionTiles and WebCore and it's not causing problems, it's just that I can't interact with it from the new app. As I have the old app still, I get SHM notifications. I found the lack of "when things get busy" is a pain, I had to come up with a piston to change mode based on motion and time of day. In summary, it's not a disaster unless you're using SHM as your alarm. I got too many false positives really so wouldn't mind just ditching it totally.