Aggregating 3D polygons based on a common ID, results in corrupted geometry.

Hi

 

 

I have a 3D city model made out of individual polygons. Polygons forming one building have a common ID (also attr like Type: Wall, Roof). I need to combine/merge/aggregate together shapes beloning to each building. The output should be a shapefile or multipatch.

 

 

I tried using Aggregator in combination with Dissolver and Sorter but data looks fine only in FME viewer. I try to use it in ArcGIS Pro, CityEngine and also in Microstation but data is completely distorted.

 

When I load non-aggregated data in ArcGIS Pro it works fine. But the problem is it has to be combined before I can use it for my project.

Any idea what could be wrong or what other ways I could use?

This is my setup And this is the result when viewed in ArcGIS Pro

Here's sample data, maybe sth is wrong with this data?