diff --git a/simapp/simd/cmd/config.go b/simapp/simd/cmd/config.go
index 68ce3a498fa5..9769a28afb1c 100644
--- a/simapp/simd/cmd/config.go
+++ b/simapp/simd/cmd/config.go
@@ -15,6 +15,9 @@ import (
 func initCometBFTConfig() *cmtcfg.Config {
 	cfg := cmtcfg.DefaultConfig()
 
+	// only display only error logs by default except for p2p and state
+	cfg.LogLevel = "*:error,p2p:info,state:info"
+
 	// these values put a higher strain on node memory
 	// cfg.P2P.MaxNumInboundPeers = 100
 	// cfg.P2P.MaxNumOutboundPeers = 40
@@ -70,19 +73,18 @@ gas-adjustment = {{ .GasConfig.GasAdjustment }}
 func initAppConfig() (string, interface{}) {
 	// The following code snippet is just for reference.
 
-	// WASMConfig defines configuration for the wasm module.
-	type WASMConfig struct {
-		// This is the maximum sdk gas (wasm and storage) that we allow for any x/wasm "smart" queries
-		QueryGasLimit uint64 `mapstructure:"query-gas-limit"`
-
-		// Address defines the gRPC-web server to listen on
-		LruSize uint64 `mapstructure:"lru-size"`
+	// CustomConfig defines an arbitrary custom config to extend app.toml.
+	// If you don't need it, you can remove it.
+	// If you wish to add fields that correspond to flags that aren't in the SDK server config,
+	// this custom config can as well help.
+	type CustomConfig struct {
+		CustomField string `mapstructure:"custom-field"`
 	}
 
 	type CustomAppConfig struct {
 		serverconfig.Config `mapstructure:",squash"`
 
-		WASM WASMConfig `mapstructure:"wasm"`
+		Custom CustomConfig `mapstructure:"custom"`
 	}
 
 	// Optionally allow the chain developer to overwrite the SDK's default
@@ -96,7 +98,7 @@ func initAppConfig() (string, interface{}) {
 	// In summary:
 	// - if you leave srvCfg.MinGasPrices = "", all validators MUST tweak their
 	//   own app.toml config,
-	// - if you set srvCfg.MinGasPrices non-empty, validators CAN tweak their
+	// - if you set srvCfg.MinGasPrices non-empty, validatorcan be used to extend the app.toml.s CAN tweak their
 	//   own app.toml to override, or use this default value.
 	//
 	// In simapp, we set the min gas prices to 0.
@@ -106,9 +108,8 @@ func initAppConfig() (string, interface{}) {
 	// Now we set the custom config default values.
 	customAppConfig := CustomAppConfig{
 		Config: *srvCfg,
-		WASM: WASMConfig{
-			LruSize:       1,
-			QueryGasLimit: 300000,
+		Custom: CustomConfig{
+			CustomField: "anything",
 		},
 	}
 
@@ -116,12 +117,10 @@ func initAppConfig() (string, interface{}) {
 	// We append the custom config template to the default one.
 	// And we set the default config to the custom app template.
 	customAppTemplate := serverconfig.DefaultConfigTemplate + `
-[wasm]
-# This is the maximum sdk gas (wasm and storage) that we allow for any x/wasm "smart" queries
-query-gas-limit = {{ .WASM.QueryGasLimit }}
-# This is the number of wasm vm instances we keep cached in memory for speed-up
-# Warning: this is currently unstable and may lead to crashes, best to keep for 0 unless testing locally
-lru-size = {{ .WASM.LruSize }}`
+[custom]
+# That field will be parsed by server.InterceptConfigsPreRunHandler and held by viper.
+# Do not forget to add quotes around the value if it is a string.
+custom-field = "{{ .Custom.CustomField }}"`
 
 	return customAppTemplate, customAppConfig
 }
diff --git a/tools/confix/CHANGELOG.md b/tools/confix/CHANGELOG.md
index 77493caf152a..2c710cad1942 100644
--- a/tools/confix/CHANGELOG.md
+++ b/tools/confix/CHANGELOG.md
@@ -31,6 +31,8 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 ## [Unreleased]
 
+* []() Remove invalid non SDK config from app.toml migration templates.
+ 
 ## [v0.1.0](https://github.com/cosmos/cosmos-sdk/releases/tag/tools/confix/v0.1.0) - 2023-11-07
 
 * [#17904](https://github.com/cosmos/cosmos-sdk/pull/17904) Add `view` command.
diff --git a/tools/confix/data/v0.45-app.toml b/tools/confix/data/v0.45-app.toml
index e6f15079c8cd..b0f6dff8237f 100644
--- a/tools/confix/data/v0.45-app.toml
+++ b/tools/confix/data/v0.45-app.toml
@@ -99,8 +99,7 @@ prometheus-retention-time = 0
 #
 # Example:
 # [["chain_id", "cosmoshub-1"]]
-global-labels = [
-]
+global-labels = []
 
 ###############################################################################
 ###                           API Configuration                             ###
@@ -208,7 +207,7 @@ streamers = []
 
 [streamers]
 [streamers.file]
-keys = ["*", ]
+keys = ["*"]
 write_dir = ""
 prefix = ""
 
@@ -221,10 +220,3 @@ stop-node-on-error = "true"
 
 # fsync specifies if call fsync after writing the files.
 fsync = "false"
-
-[wasm]
-# This is the maximum sdk gas (wasm and storage) that we allow for any x/wasm "smart" queries
-query_gas_limit = 300000
-# This is the number of wasm vm instances we keep cached in memory for speed-up
-# Warning: this is currently unstable and may lead to crashes, best to keep for 0 unless testing locally
-lru_size = 0
diff --git a/tools/confix/data/v0.46-app.toml b/tools/confix/data/v0.46-app.toml
index 6dd5e64fbfeb..28a108751900 100644
--- a/tools/confix/data/v0.46-app.toml
+++ b/tools/confix/data/v0.46-app.toml
@@ -108,8 +108,7 @@ prometheus-retention-time = 0
 #
 # Example:
 # [["chain_id", "cosmoshub-1"]]
-global-labels = [
-]
+global-labels = []
 
 ###############################################################################
 ###                           API Configuration                             ###
@@ -237,7 +236,7 @@ streamers = []
 
 [streamers]
 [streamers.file]
-keys = ["*", ]
+keys = ["*"]
 write_dir = ""
 prefix = ""
 
@@ -250,10 +249,3 @@ stop-node-on-error = "true"
 
 # fsync specifies if call fsync after writing the files.
 fsync = "false"
-
-[wasm]
-# This is the maximum sdk gas (wasm and storage) that we allow for any x/wasm "smart" queries
-query_gas_limit = 300000
-# This is the number of wasm vm instances we keep cached in memory for speed-up
-# Warning: this is currently unstable and may lead to crashes, best to keep for 0 unless testing locally
-lru_size = 0
diff --git a/tools/confix/data/v0.47-app.toml b/tools/confix/data/v0.47-app.toml
index dd9d7419a557..891431b8a50c 100644
--- a/tools/confix/data/v0.47-app.toml
+++ b/tools/confix/data/v0.47-app.toml
@@ -260,10 +260,3 @@ fsync = "false"
 # Note, this configuration only applies to SDK built-in app-side mempool
 # implementations.
 max-txs = 5000
-
-[wasm]
-# This is the maximum sdk gas (wasm and storage) that we allow for any x/wasm "smart" queries
-query_gas_limit = 300000
-# This is the number of wasm vm instances we keep cached in memory for speed-up
-# Warning: this is currently unstable and may lead to crashes, best to keep for 0 unless testing locally
-lru_size = 0
diff --git a/tools/confix/data/v0.50-app.toml b/tools/confix/data/v0.50-app.toml
index 4574f2503c97..d7b7aa48c247 100644
--- a/tools/confix/data/v0.50-app.toml
+++ b/tools/confix/data/v0.50-app.toml
@@ -222,10 +222,3 @@ stop-node-on-err = true
 # Note, this configuration only applies to SDK built-in app-side mempool
 # implementations.
 max-txs = 5000
-
-[wasm]
-# This is the maximum sdk gas (wasm and storage) that we allow for any x/wasm "smart" queries
-query_gas_limit = 300000
-# This is the number of wasm vm instances we keep cached in memory for speed-up
-# Warning: this is currently unstable and may lead to crashes, best to keep for 0 unless testing locally
-lru_size = 0