I'm aware that the elevation data in some areas of the USA was updated as part of the latest update. Not sure about any other areas because some of the freeware scenery that I downloaded and installed before the update is now hanging in the air and not at the right elevation. One of these is for the rocky Lions Head peak in Cape Town but after the update it is sitting at an elevated height.

I read that deleting the rolling cache and restarting MSFS might assist in resolving the matter which I did but to no avail. Any other suggestions?

 

Well, if the add-on isn't built for the latest mesh, all your hope lies in an updated add-on.

Thanks. I have subsequently established that the developer published an update of his add-on and it sorted the elevation issues out.