The "re-number from left to right across the entire row instead of just section" idea might have some legs.
Here's the other two I bought:
And here's a smattering of best available I could get it to spit out:
Looks like maybe all the way to the left starts at 100 and center starts around 118 and runs to around 140ish where right starts and runs to around 158?
That's fine, but a new seating chart would probably be in order if this is how they're going to do it now.