So, let's consider that Germany defeats the allies in WWI, but Austria-Hungary collapses anyway due to the internal fights between their nationalities and so.
What would happen then?
Here it is a poll with different options for the fate of the former A-H territories. Consider that the German victory allows them to impose certain territorial annexations, but it is not overwhelming enough to i.e. enforce the Brest-Litovsk Treaty to its whole extent.