I am a Ukrainian citizen currently studying in Germany and I have my Aufenthaltstitel valid till October 2017. I am taking academic leave for pregnancy for couple of years starting from the next semester in April. However, I have an important journey planned in April to Spain, Germany and Netherlands and I need to use my Aufenthaltstitel for this journey, as the procedure of getting tourist visa in Ukraine is rather unreliable.
The question is: if I take my academic leave from the university, but I don't de-register from my German address and I continue to pay my student medical insurance, will I be able to travel in April with my aufenthaltstitel?
p.s. and will my Aufenthaltstitel will be valid till October if I de-register from the address?