applied for family immigrant visas for my spouse and children under the F2A category when I was a Legal Permanent Resident (LPR). However, I have since become a U.S. citizen. After waiting for 4 years, my family finally has their embassy interview scheduled. Will the embassy process the visas based on the original F2A category, or will they inform us that the sponsor is now a U.S. citizen and request us to file again under a IR category?