Hey Omar,
Thank you for the response and sorry for the late reply.
So the way I am geolocating a 3D model in Blender is through an addon I have. The add-on allows me to bring 3D models from OpenStreetMap (OSM).
The add-on is called blender-osm and I can choose the position based on lat/lon and all the models in that location or volume are migrated to blender. Here is the github page to this addon. I had purchased it.
https://github.com/vvoovv/blender-osm. I was hoping that the 3D model is then able to geolocated and referenced and migrated to Cesium ION through the Cesium Blender addon. Please let me know if you need anything else. We would really appreciate it if this process was implemented.
I am new to mapping and these work flows. However, I was playing around with sketchup and they also have a plugin that allows OSM buildings to be brought into sketchup through a Sketchup/OSM plugin. Sketchup allows the exporting of 3D models as KMZ...which georefernces the files and i had to simply bring those KMZ files into cesium ion and found that the geolocation is saved, and the model is placed in the right spot.
So my suggestion/understanding is a similar implementation in Blender that allows the exporting of KMZ files that would simply be uploadable to Cesium ION with preservation of location information.
Please find picture below of the OSM-Blender ADD ON page inside blender.
Kind Regards
Vamshi