DUE to address change回複:I485, VSC, EB2(NIW), address change
LUD could be address changes. Even though somebody did note get LUD due to this reason. But remember, somebody alredy got GC, but their case status are still pending.
My experience: I called for address change, then next day, I check my status, get LUD. After 3 three month,call for chagned address again, got LUD again.