Thanks for your purchase.
Just an FYI in future always use the website for product support: Aircraft Manager for MSFS - Sonicviz (scroll to bottom)
This is a requirement from MS as per forum TOS, as these posts are for general discussion only.
Afaik I have received no contact from you over this issue.
That said, it is clearly stated in the Known Issues section on Aircraft Manager for MSFS 2020 - Sonicviz
" * Duplicate Devices: Does not handle duplicate devices with same Device name. This is a MSFS bug that needs to be fixed"
This is an MSFS bug and if you want action taken on it then you need to submit a ticket to Microsoft to move them along. It’s not like I’ve tried to hide the issue, I’ve been direct and upfront about it wherever I can - on the website and in forum posts.
So I recommend not to use duplicate devices in MSFS at the moment even without Aircraft Manager, as you will have the same issue. It’s been discussed multiple times on the forums too. Sometimes it all works fine, then just randomly switches. It’s duplicate controller bingo because it’s using the name as a reference under the hood, not a unique hardware controller ID. Just unplug one of the devices and you’ll be fine.
Now that Asobo have started looking into doing this themselves they will encounter the same bug themselves, so will have to fix it anyway. How long they will take to develop this is unknown at the moment. It’s not started as yet.
I’ve also raised this a number of times in forum threads, such as: