This is a once only fee for a major upgrade to the latest standard single user version JSEAsy v4.5.6
This upgrade applies to all standard/ base version v4.4.1
This will upgrade your existing data file and give you a lifetime licence for JSEAsy Single User v4.5.6
All of your existing data will remain intact. All of the new features are added to your existing data file when you upgrade to v4.5.6