As I mentioned we should distinguish issue #1 from issue #2 (I should have made two posts…)
Issue #1 is still unresolved, @mostapha is looking into it, this one has a major impact on the export of gbXML as it results in having roof surfaces inside the building (where they obviously should not be). This issue is already evident in the pollination interface before exporting.
Issue #2 regard the misplaced floor / ceiling surfaces, we understood this issue is generated by the “nature” of the gbXML schema. This is not as important as issue #1 as the surface type can be fixed afterward in Lesosai… Of course what a “correct” schema could have multiple interpretation but I think we all agree we should have uniformity across floor surfaces of a multi story building?