diff --git a/UPGRADING.md b/UPGRADING.md
index 90827854d845..7a1f2118a926 100644
--- a/UPGRADING.md
+++ b/UPGRADING.md
@@ -72,7 +72,7 @@ More information about [confix](https://docs.cosmos.network/main/tooling/confix)
 
 #### gRPC-Web
 
-gRPC-Web is now listening to the same address as the gRPC Gateway API server (default: `localhost:1317`).
+gRPC-Web is now listening to the same address and port as the gRPC Gateway API server (default: `localhost:1317`).
 The possibility to listen to a different address has been removed, as well as its settings.
 Use `confix` to clean-up your `app.toml`. A nginx (or alike) reverse-proxy can be set to keep the previous behavior.
 
diff --git a/tools/confix/data/v0.47-app.toml b/tools/confix/data/v0.47-app.toml
index 6f26abc13c09..c45f5f246bdd 100644
--- a/tools/confix/data/v0.47-app.toml
+++ b/tools/confix/data/v0.47-app.toml
@@ -59,8 +59,7 @@ inter-block-cache = true
 # ["message.sender", "message.recipient"]
 index-events = []
 
-# IavlCacheSize set the size of the iavl tree cache. 
-# Default cache size is 50mb.
+# IavlCacheSize set the size of the iavl tree cache (in number of nodes).
 iavl-cache-size = 781250
 
 # IAVLDisableFastNode enables or disables the fast node feature of IAVL. 
@@ -141,6 +140,42 @@ rpc-max-body-bytes = 1000000
 # EnableUnsafeCORS defines if CORS should be enabled (unsafe - use it at your own risk).
 enabled-unsafe-cors = false
 
+###############################################################################
+###                           Rosetta Configuration                         ###
+###############################################################################
+
+[rosetta]
+
+# Enable defines if the Rosetta API server should be enabled.
+enable = false
+
+# Address defines the Rosetta API server to listen on.
+address = ":8080"
+
+# Network defines the name of the blockchain that will be returned by Rosetta.
+blockchain = "app"
+
+# Network defines the name of the network that will be returned by Rosetta.
+network = "network"
+
+# Retries defines the number of retries when connecting to the node before failing.
+retries = 3
+
+# Offline defines if Rosetta server should run in offline mode.
+offline = false
+
+# EnableDefaultSuggestedFee defines if the server should suggest fee by default.
+# If 'construction/medata' is called without gas limit and gas price,
+# suggested fee based on gas-to-suggest and denom-to-suggest will be given.
+enable-fee-suggestion = false
+
+# GasToSuggest defines gas limit when calculating the fee
+gas-to-suggest = 200000
+
+# DenomToSuggest defines the defult denom for fee suggestion.
+# Price must be in minimum-gas-prices.
+denom-to-suggest = "uatom"
+
 ###############################################################################
 ###                           gRPC Configuration                            ###
 ###############################################################################
@@ -233,4 +268,4 @@ max-txs = "5000"
 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
+lru_size = 0
\ No newline at end of file
diff --git a/tools/confix/diff.go b/tools/confix/diff.go
index 9abc4cd87aff..6cb3ea048bdc 100644
--- a/tools/confix/diff.go
+++ b/tools/confix/diff.go
@@ -10,9 +10,11 @@ import (
 	"github.com/creachadair/tomledit/transform"
 )
 
+type DiffType string
+
 const (
-	Section = "S"
-	Mapping = "M"
+	Section DiffType = "S"
+	Mapping DiffType = "M"
 )
 
 type KV struct {
@@ -22,7 +24,7 @@ type KV struct {
 }
 
 type Diff struct {
-	Type    string // "section" or "mapping"
+	Type    DiffType
 	Deleted bool
 
 	KV KV
@@ -41,7 +43,6 @@ func DiffKeys(lhs, rhs *tomledit.Document) []Diff {
 	i, j := 0, 0
 	for i < len(lsec) && j < len(rsec) {
 		switch {
-
 		case lsec[i].Name.Before(rsec[j].Name):
 			diff = append(diff, Diff{Type: Section, Deleted: true, KV: KV{Key: lsec[i].Name.String()}})
 			for _, kv := range allKVs(lsec[i]) {
diff --git a/tools/confix/migrations.go b/tools/confix/migrations.go
index 254fb9fa2dc4..d5347c9bc301 100644
--- a/tools/confix/migrations.go
+++ b/tools/confix/migrations.go
@@ -51,12 +51,13 @@ func PlanBuilder(from *tomledit.Document, to string) transform.Plan {
 				step = transform.Step{
 					Desc: fmt.Sprintf("add %s section", kv.Key),
 					T: transform.Func(func(_ context.Context, doc *tomledit.Document) error {
+						title := fmt.Sprintf("###                    %s Configuration                    ###", strings.Title(kv.Key))
 						doc.Sections = append(doc.Sections, &tomledit.Section{
 							Heading: &parser.Heading{
 								Block: parser.Comments{
-									"###############################################################################",
-									fmt.Sprintf("###							%s Configuration							###", strings.Title(kv.Key)),
-									"###############################################################################",
+									strings.Repeat("#", len(title)),
+									title,
+									strings.Repeat("#", len(title)),
 								},
 								Name: keys,
 							},
@@ -77,9 +78,9 @@ func PlanBuilder(from *tomledit.Document, to string) transform.Plan {
 				} else if len(keys) > 1 {
 					step = transform.Step{
 						Desc: fmt.Sprintf("add %s key", kv.Key),
-						T: transform.EnsureKey(parser.Key{keys[0]}, &parser.KeyValue{
+						T: transform.EnsureKey(keys[0:len(keys)-1], &parser.KeyValue{
 							Block: kv.Block,
-							Name:  parser.Key{keys[1]},
+							Name:  parser.Key{keys[len(keys)-1]},
 							Value: parser.MustValue(kv.Value),
 						}),
 					}
@@ -90,16 +91,20 @@ func PlanBuilder(from *tomledit.Document, to string) transform.Plan {
 		} else {
 			if diff.Type == Section {
 				deletedSections[kv.Key] = true
-			}
-
-			// when the whole section is deleted we don't need to remove the keys
-			if len(keys) > 1 && deletedSections[keys[0]] {
-				continue
-			}
+				step = transform.Step{
+					Desc: fmt.Sprintf("remove %s section", kv.Key),
+					T:    transform.Remove(keys),
+				}
+			} else {
+				// when the whole section is deleted we don't need to remove the keys
+				if len(keys) > 1 && deletedSections[keys[0]] {
+					continue
+				}
 
-			step = transform.Step{
-				Desc: fmt.Sprintf("remove %s key", kv.Key),
-				T:    transform.Remove(keys),
+				step = transform.Step{
+					Desc: fmt.Sprintf("remove %s key", kv.Key),
+					T:    transform.Remove(keys),
+				}
 			}
 		}
 
diff --git a/tools/confix/upgrade.go b/tools/confix/upgrade.go
index 203410d163e5..1c01d6fbc22e 100644
--- a/tools/confix/upgrade.go
+++ b/tools/confix/upgrade.go
@@ -83,7 +83,7 @@ func CheckValid(fileName string, data []byte) error {
 		}
 
 		if err := cfg.ValidateBasic(); err != nil {
-			return fmt.Errorf("server config invalid : %w", err)
+			return fmt.Errorf("server config invalid: %w", err)
 		}
 	case strings.HasSuffix(fileName, ClientConfig):
 		var cfg clientcfg.ClientConfig
diff --git a/tools/confix/upgrade_test.go b/tools/confix/upgrade_test.go
index e2f1d8e21c08..e3f8f094ec34 100644
--- a/tools/confix/upgrade_test.go
+++ b/tools/confix/upgrade_test.go
@@ -18,10 +18,6 @@ func mustReadConfig(t *testing.T, path string) []byte {
 	return f
 }
 
-func TestUpgrade(t *testing.T) {
-	// TODO: add more test cases
-}
-
 func TestCheckValid(t *testing.T) {
 	err := confix.CheckValid("foo", []byte{})
 	assert.ErrorContains(t, err, "unknown config")