Does upgrading allow access to previous trips?

Yes!

When you upgrade to the Driversnote Basic subscription, you can create reports for all your saved trips that you have added at any time! There is no need to “backdate” your subscription or anything similar. 

When you upgrade, you have full access to full report creation for any time you have saved trips. 

This does mean that if you are not subscribing, you cannot create reports, even for times you were previously a subscriber.

Login to your subscription page and see your options to upgrade now.