Hmm,
These extra slot requests using the 3xx flight no.s suggest 3 possibilities to me.
1.
the flight no.s are just used for the initial application and would be changed if they were to be required ex LBA.
2.
there is only one flight per day (with the exception of mon) this would fit in with a BFS based aircraft operating the LBA sectors with a european sector in the midday gap.
the mention of LBA in the routing being a hoax and would be changed as soon as the announcement is made.
3.
a BFS based a/c operating a transit flight through LBA.
the least likely but still a possibility.
the fact that servisair handle them in BFS and LBA would make a transit flight easier to organize than with two different handling agents.
GOOD LUCK TO THEM ANYWAY.