ExpressionDataMapping._mapRawDataPropertiesToObject attempts to mergeDataObjects like booleans or strings

[marchant]

_mapRawDataPropertiesToObject > ._registerMappedPropertyValueAsChangesForCreatedObject() > _mainService.mergeDataObject(value);

ExpressionDataMapping:

this._registerMappedPropertyValueAsChangesForCreatedObject(targetPath, resultValue, (changesForDataObject || (changesForDataObject = service.changesForDataObject(object))), object, (mainService || (mainService = service.mainService)));

This creates changesForDataObject, which we typically don't do for created objects, we loop over their properties directly since everything is now. So we either need to track changes that way for all created objects, or stop doing it here.