upgrade strimzi with helm

[javadnasrolahi]

I currently have a Kafka 2.5 cluster with Strimzi 0.19 deployed using Helm 2. I want to upgrade Strimzi to version 0.22.1 following the version guide, which states that this upgrade should be possible without any issues.

However, I've encountered a problem while attempting the upgrade. Strimzi 0.22.1 does not have a Helm 2 template, so I need to use Helm 3. The issue arises because in Helm 2, the CRDs (Custom Resource Definitions) are included as part of the Helm chart. But in Helm 3, the CRDs are separated and placed in a CRD directory. As a result, when I run the Helm upgrade command, all the Helm 2 CRDs are deleted, causing the Kafka instances to terminate and resulting in downtime. Furthermore, some Kafka topics have disappeared, resulting in data loss.

I'm seeking guidance on a safe and seamless method to upgrade Strimzi and its CRDs, avoiding any downtime and data loss.