Hi, @novastables .
Thanks for following up.
I’m not sure why you would need to continue paying for Matrixify after the initial export and import of your products. However, it’s possible this is required for the redirection that you’ve mentioned to keep working. Since this is a third-party app, then I’d recommend getting in touch directly with the app developer to better understand the impacts if you decide to stop using their app. If you need to get help with a third-party app, then you can simply contact the developer using the contact information found at the bottom of their app’s page.
As for the collections, you will need to add a collection column exception in order to import collections as indicated on our guide - 'Using CSV files to import and export products’. However, while our collections don’t have levels, you can set up the navigations of your store using multi-level drop-downs menus.
If you have any other questions on this topic, then don’t hesitate to let me know!