Dual citizenship document verification/validation
I was born in country C1, moved abroad to study and work in country C2. Further, I got citizenship from country C3. While on C2, I worked on company K1 using passport from country C1. Now I'm about to change my job to company K2 and I would like to use my new passport from country C3, meaning the visa stamp will go on the C3 passport and I guess the C1 passport will receive a stamp to cancel the visa. I'm still living in country C2.
All my documents, i.e. master degree certificate, refer to C1 passport. In order to receive the work visa I have to present many documents including my master degree certificate. But these documents refer to the other passport and I have a feeling I should tie these things together.