If you've made changes in the review screen (including changes to the Action to Take and record matching), but are not able to complete the import immediately, you can save the review session and reload it later (providing that you open Importacular with the same data selection and the same template).
To save, go to Options at the top of your screen and then select 'Save Review Session.'
You will then see this message:
Click OK to save your session.
After you have saved a session, you will be prompted to re-open it when you access the same template with the same data (either a file or the same dates, etc. on one of the API linked sources).