Salesforce importer, add new table to existing model

[lightsailpro]

I created a model (imprted a few salesforce tables) using the SalesForce importer. I 'd like to add a few more tables to the existing model, do I need to blow away existing model and create a new model? I could not find any menu item that allows me to launch the importer and add tables to existing model. Thanks in advance.

[rareddy]

Typically you launch the same importer and it offers a way to upgrade it. I know JDBC importer has this update feature, not sure about the SF.