The marching band alignment to Areas has nothing to do with UIL realignment, other than the classification of the schools to 4A/5A/6A.
Area alignments are handled by TMEA.
Realignment results in a domino effect, so it's a tough process to initiate. The #4 qualifier from J narrowly missed Finals, but still missed. So at least we know the Finalist level bands all advanced to State, which to my mind is the first aim of Area.