When upgrading from v1.0 to 2.0 using cjio [file] upgrade save [file] (using cjio v0.9.0; supports CityJSON v2.0), with for example these files:
601_SM_Solids.city.json
601_1_SM_solids.city.json
it doesn't change the lods from the geometries to strings making the schema validation report that the file is invalid.
When upgrading from v1.0 to 2.0 using cjio [file] upgrade save [file] (using cjio v0.9.0; supports CityJSON v2.0), with for example these files:
601_SM_Solids.city.json
601_1_SM_solids.city.json
it doesn't change the lods from the geometries to strings making the schema validation report that the file is invalid.