Units in odd places

I knew about Siebenburgen, Banat, the whole Grenzer deal and the Volga community, but I didn't know about the Caucasus Germans, I suppose they were colonists there too, in an effort by the Russian government to gain control over the area. They must have been asked to settle the minute the Russians kicked the Ottoman's and/or the Persians out, if it's during the same period as Siebenburgen etc. Could have been messy if the great powers had been keen on restoring the balance like they did after the whole greater Bulgaria mess in 1878? San Stefano? or so.

Italy has no transports or escorts (4.04)
Where do you add convoys and transports?