I'm having a similar issue. I made "Armee d'Allemange" with Murat in Hannover. It keeps renaming itself "Grand Armee", while the 'real' Grand Armee is in Strasbourg. When I reload, Grand Armee becomes Armee du Sud.

I noticed that the movement for the Alpine terrain is actually easier than the surrounding mountains.

Also, do roads and bridges work? The movement paths don't seem to prioritize sticking to the roads for the most part.