It this something that was removed recently? Or is there somewhere else I need to be looking? I have my packages installed on a separate drive from the main install file.
look for a similar repository in C: drive, just because you moved the ‘Packages’ doesnt mean the config files are also moved (its possible but its 2 separate steps)
try this location for ms store version
C:\Users\<your_username>\AppData\Local\Packages\Microsoft.FlightSimulator_8wekyb3d8bbwe\LocalCache
and ‘maybe’ this one for steam (im guessing here)
C:\Users\<your_username>\AppData\Roaming\Microsoft Flight Simulator\LocalCache
The Content.xml file is no longer required, and isn’t included in the installation by default.
However, some addons specifically need it (Navigraph for one) and the addon will create one.