I cannot be bothered reading 94 page....Also how likely is it that LHR-BHD and LHR-DUB will remain in the long term ? Will british airways keep the same frequency on these routes (BHD,DUB) as Bmi did ?
If you make the effort to read from P95 backwards you'll see your second question answered in part. Capacity to Japan is well down on what it was a few years back but OSA is an old BA route that may return once the BMI slots are bedded in.