Lessening Habsburg Austria's Holdings?

After the French Revolution, is there any possible way (ignoring the possibility of Napoléon somehow managing to partition it) for the main Habsburg branch to loose their non-German holdings? Even if the territories are inherited by a cadet branch.
 
Aside from 1848? Difficult to see. Realistically one would need Prussia+Italy+Russia to agree to a partition, essentially, as Britain would be utterly opposed and it's hard to see France agreeing to it either. An early Italian Unification in time for a greater Crimean War pitting Austria, France, and Britain against Prussia, Italy, and Russia?
 
Well, after the Revolution, the Habsburgs did lose some territory, but in Germany - to wit, the hodge-podge of disconnected fiefdoms in southwestern Germany sometimes called Hither Austria.
 
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