diff --git a/k8s/upgrade/src/bin/upgrade-job/helm/chart.rs b/k8s/upgrade/src/bin/upgrade-job/helm/chart.rs
index 0e567b23e..8a90faf74 100644
--- a/k8s/upgrade/src/bin/upgrade-job/helm/chart.rs
+++ b/k8s/upgrade/src/bin/upgrade-job/helm/chart.rs
@@ -61,8 +61,10 @@ impl HelmValuesCollection for UmbrellaValues {
 /// This is used to deserialize the values.yaml of the Core chart.
 #[derive(Deserialize)]
 pub(crate) struct CoreValues {
-    /// This contains values for all of the agents.
+    /// This contains values for all the agents.
     agents: Agents,
+    /// This contains values for all the base components.
+    base: Base,
     /// This is the yaml object which contains values for the container image registry, repository,
     /// tag, etc.
     image: Image,
@@ -182,6 +184,11 @@ impl CoreValues {
         self.csi.node_nvme_io_timeout()
     }
 
+    /// This returns the value of the removed key for CSI socket mount path.
+    pub(crate) fn deprecated_node_csi_mount_path(&self) -> &str {
+        self.csi.deprecated_node_csi_mount_path()
+    }
+
     /// This is a getter for the grafana/loki container image tag.
     pub(crate) fn loki_stack_loki_image_tag(&self) -> &str {
         self.loki_stack.loki_image_tag()
@@ -298,6 +305,11 @@ impl CoreValues {
     pub(crate) fn prometheus_server_image_tag(&self) -> &str {
         self.loki_stack.prometheus_server_image_tag()
     }
+
+    /// This is the value of the deprecated key for log silence configuration.
+    pub(crate) fn deprecated_log_silence_level(&self) -> &str {
+        self.base.deprecated_log_silence_level()
+    }
 }
 
 /// This is used to deserialize the yaml object agents.
@@ -313,6 +325,20 @@ impl Agents {
     }
 }
 
+/// This is used to deserialize the yaml object base.
+#[derive(Deserialize)]
+struct Base {
+    #[serde(default, rename(deserialize = "logSilenceLevel"))]
+    deprecated_log_silence_level: String,
+}
+
+impl Base {
+    /// This returns the value for the removed base.logSilenceLevel YAML key.
+    fn deprecated_log_silence_level(&self) -> &str {
+        self.deprecated_log_silence_level.as_str()
+    }
+}
+
 /// This is used to deserialize the yaml object 'agents.ha'.
 #[derive(Deserialize)]
 struct Ha {
@@ -475,6 +501,11 @@ impl Csi {
     fn node_nvme_io_timeout(&self) -> &str {
         self.node.nvme_io_timeout()
     }
+
+    /// This returns the mount path value's key, the old one with the typo.
+    fn deprecated_node_csi_mount_path(&self) -> &str {
+        self.node.deprecated_plugin_mount_path()
+    }
 }
 
 /// This contains the image tags for the CSI sidecar containers.
@@ -534,6 +565,8 @@ impl CsiImage {
 #[derive(Deserialize)]
 struct CsiNode {
     nvme: CsiNodeNvme,
+    #[serde(default, rename(deserialize = "pluginMounthPath"))]
+    deprecated_plugin_mount_path: String,
 }
 
 impl CsiNode {
@@ -541,6 +574,11 @@ impl CsiNode {
     fn nvme_io_timeout(&self) -> &str {
         self.nvme.io_timeout()
     }
+
+    /// This returns the csi node mount path key's value. The key had a typo, it's been removed.
+    fn deprecated_plugin_mount_path(&self) -> &str {
+        self.deprecated_plugin_mount_path.as_str()
+    }
 }
 
 /// This is used to deserialize the yaml object 'csi.node.nvme'.
diff --git a/k8s/upgrade/src/bin/upgrade-job/helm/values.rs b/k8s/upgrade/src/bin/upgrade-job/helm/values.rs
index 895d08c31..0f83767ed 100644
--- a/k8s/upgrade/src/bin/upgrade-job/helm/values.rs
+++ b/k8s/upgrade/src/bin/upgrade-job/helm/values.rs
@@ -264,13 +264,7 @@ where
                 upgrade_values_file.path(),
             )?;
         }
-    }
 
-    // Special-case values for 2.6.x.
-    let two_dot_six = Version::parse(TWO_DOT_SIX).context(SemverParse {
-        version_string: TWO_DOT_SIX.to_string(),
-    })?;
-    if source_version.ge(&two_dot_o_rc_zero) && source_version.lt(&two_dot_six) {
         // Switch out image tag for the latest one.
         yq.set_literal_value(
             YamlKey::try_from(".loki-stack.loki.image.tag")?,
@@ -361,6 +355,30 @@ where
             target_values.promtail_readiness_probe_http_get_path(),
             upgrade_values_file.path(),
         )?;
+
+        // This helm value key was changed:
+        // Ref: https://github.com/openebs/mayastor-extensions/pull/419
+        yq.set_literal_value(
+            YamlKey::try_from(".base.logging.silenceLevel")?,
+            source_values.deprecated_log_silence_level(),
+            upgrade_values_file.path(),
+        )?;
+        yq.delete_object(
+            YamlKey::try_from(".base.logSilenceLevel")?,
+            upgrade_values_file.path(),
+        )?;
+
+        // This is a fix for a typo in the .csi.node.pluginMounthPath key.
+        // It was fixed, and the key now is called .csi.node.pluginMountPath.
+        yq.set_literal_value(
+            YamlKey::try_from(".csi.node.pluginMountPath")?,
+            source_values.deprecated_node_csi_mount_path(),
+            upgrade_values_file.path(),
+        )?;
+        yq.delete_object(
+            YamlKey::try_from(".csi.node.pluginMounthPath")?,
+            upgrade_values_file.path(),
+        )?;
     }
 
     // Default options.