Hello @dimperi, thank you for your patience. After some further investigation, this turned out be expected behavior. If we change the “Aggregate Type” to “Heterogenous” in the Aggregator, within the “create ElevatedSurface Geometry” bookmark, we will see MarkingElement written to the AIXM output. When the Aggregator is in “homogenous (if possible)” mode, features are aggregated as a MultiArea, opposed to an FME Aggregate. When FME maps to the AIXM schema, there are two viable options for storing MarkingElement in RunwayMarkingTimeSlice, either as a multi-geometry or aggregate. This means, when a MultiArea feature is sent to the writer, the writer does not recognize it (eg. It is not looking for a MultiArea, so it can't find and will overlook any MarkingElement element geometries). I think this is a result of how we are attempting to represent multiple geometries in the FME features that are currently only designed to hold a single geometry. Please let me know if this makes sense and if you were able to write MarkingElement after making the change. Happy to help, Kailin.
