You upgrade to Deploy 15 and notice you have one or more duplicates in the Upgraded Auto Deployments folder.
The packages are not actually duplicates, so this is by design. When an Auto Deployment package has multiple approval settings (schedule-level), the packages are upgraded and then split into different packages to reflect the different approvals.
In PDQ Deploy 14, there are three Auto Deployment packages, 7-Zip, FileZilla, and Google Chrome Enterprise.
With 7-Zip, there are three schedules, all with different approvals:
With FileZilla, there are two schedules, both with different approvals:
With Chrome, there is one schedule, and one approval:
PDQ Deploy 14 is upgraded to PDQ Deploy 15+. Previous Auto Deployment packages are converted into Auto Download packages and placed in the "Upgraded Auto Deployments" folder.
Notice the multiple packages. Each package is created and reflects a different approval: