I agree with Viajero that the new rule looks nonsensical. But if you add a period (full stop), then the rule might mean that trans-oceanic surface sectors are permitted for ex-SWP OWEs as long as the surface sector is wholly within the Asia-SWP Area (added period shown in red):
EXCEPTION: ORIGINATING IN THE SWP - ONE
TRANSOCEANIC SURFACE SECTOR IS PERMITTED. BETWEEN
AREA 1 AND AREA 2/3 ARE NOT PERMITTED.
(Even if this is correct, the wording of the rule is still preposterous.)