I have been using the Elk M1 Gold security system with the 994i for years with few problems.  Recently the Mi exp communication module failed and I replaced it with a NEO system.  I kept the ISY 994i hoping I could continue to use it.  But since the change I find the some, but not all of my Insteon devices work once or twice and then I get the red exclamation mark and the message that the device is not connected to the system.  I have used query and reset and add new insteon device etc.  Sometimes I can get reconnected but after a few cycles I get the red exclamation again and the device won't respond.  Some devices show a green icon and will work one time and then disconnect. The three green icons at the bottom of the list in the screenshot show some of the new devices that I tried to add, but some of the normal icon for devices that I have been using successfully for years also will disconnect and show the disconnect icon.  

I don't see the disable Elk checkbox in the Elk configuration page that is shown in the 994 manual.

 

 

johnsmal  

My condolences for buying a neo system.  There is no linking that to anything, unless you live in Canada and then you can use their app and only their app.

Back to your Elk.  Were you using Elk to directly control Insteon devices or were you going through ISY?  There is no reason for removal of Elk to have anything to do with Insteon traffic except perhaps if you had the Elk working directly with Insteon.  I forget exactly how Elk direct control works to say for sure.

Looking at your system, you don't have a whole lot of devices.  You might just consider deleting everything and readding.  Perhaps you some orphan links that are messing with things from the Elk removal.  If you delete the devices one at a time and add them back in, any devices in programs will go right back into those programs.  You will have to rebuild your scenes.  After you do that, you either need to go into each program and hit any random item then "update" then "save" or the program won't work.  I think rebooting ISY will also make the programs work again.