EF pulls the seatmap without any reference and displays the result. LO is showing you how they have assigned the cabin using Altea Theoretical Seating and what choices they will allow you based on the background they have on your specific case.
FWIW here is what amadeus is showing me: (row 1-4 business, 5-7 blocked, probably for PE)
Code:
SM LO 0286/C/03JULLHRWAW/V
SM LO 0286 C 03JUL LHRWAW 73H
A B C D E F
C 1 + + + + 1 C
2 + + + + 2
3 + + + + 3
4 V V V V 4
A B C D E F
. AVAILABLE <> WING F GEN FACI K GALLEY E EXIT C COT
+ OCCUPIED - LAST OFF H HANDICAP Q QUIET G GROUPS P PET
/ RESTRICTED B BULKHEAD V PREF.SEAT X BLOCKED L LEGROOM U UMNR
() SMOKING D DEPORTEE UP UP-DECK Z NO FILM I INFANT R REAR
Y CHARGEABLE
>sm/1/y/v
SM LO 0286/Y/03JULLHRWAW/V
SM LO 0286 Y 03JUL LHRWAW 73H
A B C D E F
Y 5 / / / / / / 5 Y
6 / / / / / / 6
7 / / / / / / 7
8 + / + / / + 8
9 + / / / + + 9
10 + / / / / + 10
A B C D E F
A B C D E F
Y 11 / / / / / / 11 Y
12 < / D / / / / > 12
13 < + + + + / + > 13
14 <E + / / / / + E> 14
A B C D E F
. AVAILABLE <> WING F GEN FACI K GALLEY E EXIT C COT
+ OCCUPIED - LAST OFF H HANDICAP Q QUIET G GROUPS P PET
/ RESTRICTED B BULKHEAD V PREF.SEAT X BLOCKED L LEGROOM U UMNR
() SMOKING D DEPORTEE UP UP-DECK Z NO FILM I INFANT R REAR
Y CHARGEABLE
SM LO 0286/Y/03JULLHRWAW/V
15 <E / / / / / / E> 15
16 < + / / + / + > 16
17 < + / / / / / > 17
18 < / / / / / / > 18
19 < / / / / / / > 19
20 / / / / / / 20
A B C D E F
A B C D E F
Y 21 + + / / / / 21 Y
22 / / / / / / 22
23 / / / / U / 23
24 / / / / / + 24
25 / / + / / + 25
26 + / / / / / 26
A B C D E F
. AVAILABLE <> WING F GEN FACI K GALLEY E EXIT C COT
+ OCCUPIED - LAST OFF H HANDICAP Q QUIET G GROUPS P PET
/ RESTRICTED B BULKHEAD V PREF.SEAT X BLOCKED L LEGROOM U UMNR
() SMOKING D DEPORTEE UP UP-DECK Z NO FILM I INFANT R REAR
Y CHARGEABLE
)>