Is there any way to use (update) a pre-trained logistic regression model for data with new set of columns?
As far I know, if you want to extend your model training, then number of feature should be same as previous one.


  In case you have more features, then you have two options:
  
  
  Drop those new features
  Retrain your model from scratch
  
  
  In case you have less features, then again you have two options:
  
  
  Place some values in missing features. Yo can use Impute classes, Refer Link for more information
  Retrain your model from scratch