How to merge/dissolve 3D polygons with common ID to create a singlepart building?

[AleksanderStysiak]

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, so when I select a building it markes an entire entity and not just one of the polygons. The output should be a shapefile or multipatch. 

I tried using dissolve but it fails each time. I want to use data later in Pro and CityEngine.

Anyone has an idea how to do that kind of ID-based multipart to singlepart merge? 

I attached also sample data

Thanks! 

[DanPatterson_Retired]

It worked form me (did it in PRO, but that shouldn't matter)

I just dissolved on the ID field.

You just get the outline from the multipart... check the options I used

[AleksanderStysiak]

Hey Dan

Thanks for the input and your time. 
I tried this approach earlier but with no result. I tried again with those settings you propose but it also fails. 
There is not much that can be wrong with this so I cant figure out the issue. 

Nevertheless, I fixed it with FME

[LauraGockert]

Hey Aleksander,

I have the same problem. How exactly did you fix it with FME?

Thanks for your help!