Adeptia recommend to fresh install AC4.0 GA and don't use standard upgrade path.
Standard upgrade path for AC 4.0 GA onward
From AC4.0 GA onward Adeptia will provide standard upgrade features for upgrading to newer release version of AC4. To upgrade to a higher version of Adeptia Connect, you need to do the following in the same order.
Update the Helm repository.
Upgrade to the next version
Updating the Helm Repository
Before you start to move to next version, make sure that you have updated the Helm Repository.
To update the Helm Repository, run the following command on the Helm CLI.
helm repo update
Upgrading to the higher version
After you've updated the Helm Repository, run the following command on the Helm CLI.