I have three PE tickets for SCL-GRU on Sat for which we had row 1 per-assigned in the 3 row 2x2 PE cabin with middle seat blocked. Just done online checkin at T-48 and being shown an all economy domestic seatmap with 3x3 from row 1 all the way back and been assigned row 37!! Boarding pass still says Premium Economy but 37F. Clearly wrong seatmap has been loaded for checkin.

LATAM phone support utterly useless. First said to call BA (who issued ticket)- when I pointed out that it was their seatmap via their website the answer was to ask at the airport...

Anyone seen this before? Will it fix itself between now and departure?

thanks