I'll throw out a theory, although others who understand LX's seating policies please feel free to correct me. As the "curtain" moves (how many rows are planned for C), LX moves pre-seated customers in reference to the first row of Y. So if you had row 8 as the first row of Y, and then C goes to row 8, they move row 8 to 9, 9 to 10, etc. - rather than kick row 8 to the back or something. In this case, there was no one booked in the rows in front of you, and I'm guessing LX doesn't account for that, nor that those were preferred seats in 11. In other words... "Never ascribe to malice that which is adequately explained by incompetence."

Again, just a theory.

Cheers,
bawm