Launching Heidi via CLI - Nested Connection

I'm currently using a Powershell Script to launch the Heidi executable and I'm running into an issue using the -d (description flag). It works fine if I have a session with that name currently, however when I have a connection in a folder it does not detect it. I've tried -d="FolderName\SessionName" but that did not work. Anyone have any ideas on how to get it to detect and launch a nested connection? Thanks in advance.

I just tried that like you did, and it works here - with the latest build:

heidisql.exe -d="Test\local"

I think this is case sensitive. And if that still does not work please update to the latest build, through Help > Check for updates.