diff --git a/clients/bigquery/bigquery.go b/clients/bigquery/bigquery.go
index 1bc15630..585ab4e5 100644
--- a/clients/bigquery/bigquery.go
+++ b/clients/bigquery/bigquery.go
@@ -69,8 +69,8 @@ func (s *Store) Append(tableData *optimization.TableData, useTempTable bool) err
 
 	query := fmt.Sprintf(`INSERT INTO %s (%s) SELECT %s FROM %s`,
 		tableID.FullyQualifiedName(),
-		strings.Join(sql.QuoteIdentifiers(tableData.ReadOnlyInMemoryCols().GetColumnsToUpdate(), s.Dialect()), ","),
-		strings.Join(sql.QuoteIdentifiers(tableData.ReadOnlyInMemoryCols().GetColumnsToUpdate(), s.Dialect()), ","),
+		strings.Join(sql.QuoteColumns(tableData.ReadOnlyInMemoryCols().ValidColumns(), s.Dialect()), ","),
+		strings.Join(sql.QuoteColumns(tableData.ReadOnlyInMemoryCols().ValidColumns(), s.Dialect()), ","),
 		temporaryTableID.FullyQualifiedName(),
 	)
 
diff --git a/clients/mssql/staging.go b/clients/mssql/staging.go
index e01c884d..a9b39715 100644
--- a/clients/mssql/staging.go
+++ b/clients/mssql/staging.go
@@ -10,6 +10,7 @@ import (
 	"github.com/artie-labs/transfer/lib/destination/types"
 	"github.com/artie-labs/transfer/lib/optimization"
 	"github.com/artie-labs/transfer/lib/sql"
+	"github.com/artie-labs/transfer/lib/typing/columns"
 )
 
 func (s *Store) PrepareTemporaryTable(tableData *optimization.TableData, tableConfig *types.DwhTableConfig, tempTableID sql.TableIdentifier, _ types.AdditionalSettings, createTempTable bool) error {
@@ -41,7 +42,8 @@ func (s *Store) PrepareTemporaryTable(tableData *optimization.TableData, tableCo
 		}
 	}()
 
-	columns := tableData.ReadOnlyInMemoryCols().GetColumnsToUpdate()
+	// TODO: Refactor the loop below to use the columns from [ValidColumns]
+	columns := columns.ColumnNames(tableData.ReadOnlyInMemoryCols().ValidColumns())
 	stmt, err := tx.Prepare(mssql.CopyIn(tempTableID.FullyQualifiedName(), mssql.BulkOptions{}, columns...))
 	if err != nil {
 		return fmt.Errorf("failed to prepare bulk insert: %w", err)
diff --git a/clients/redshift/staging.go b/clients/redshift/staging.go
index b67060de..e7bb1999 100644
--- a/clients/redshift/staging.go
+++ b/clients/redshift/staging.go
@@ -63,7 +63,7 @@ func (s *Store) PrepareTemporaryTable(tableData *optimization.TableData, tableCo
 	copyStmt := fmt.Sprintf(
 		`COPY %s (%s) FROM '%s' DELIMITER '\t' NULL AS '\\N' GZIP FORMAT CSV %s dateformat 'auto' timeformat 'auto';`,
 		tempTableID.FullyQualifiedName(),
-		strings.Join(sql.QuoteIdentifiers(tableData.ReadOnlyInMemoryCols().GetColumnsToUpdate(), s.Dialect()), ","),
+		strings.Join(sql.QuoteColumns(tableData.ReadOnlyInMemoryCols().ValidColumns(), s.Dialect()), ","),
 		s3Uri,
 		s.credentialsClause,
 	)
diff --git a/clients/snowflake/staging.go b/clients/snowflake/staging.go
index 8936dd82..c6ad7d80 100644
--- a/clients/snowflake/staging.go
+++ b/clients/snowflake/staging.go
@@ -95,7 +95,7 @@ func (s *Store) PrepareTemporaryTable(tableData *optimization.TableData, tableCo
 	// COPY the CSV file (in Snowflake) into a table
 	copyCommand := fmt.Sprintf("COPY INTO %s (%s) FROM (SELECT %s FROM @%s)",
 		tempTableID.FullyQualifiedName(),
-		strings.Join(sql.QuoteIdentifiers(tableData.ReadOnlyInMemoryCols().GetColumnsToUpdate(), s.Dialect()), ","),
+		strings.Join(sql.QuoteColumns(tableData.ReadOnlyInMemoryCols().ValidColumns(), s.Dialect()), ","),
 		escapeColumns(tableData.ReadOnlyInMemoryCols(), ","), addPrefixToTableName(tempTableID, "%"))
 
 	if additionalSettings.AdditionalCopyClause != "" {
diff --git a/lib/typing/columns/columns.go b/lib/typing/columns/columns.go
index dddc3e4e..f341befc 100644
--- a/lib/typing/columns/columns.go
+++ b/lib/typing/columns/columns.go
@@ -177,13 +177,6 @@ func (c *Columns) GetColumn(name string) (Column, bool) {
 	return Column{}, false
 }
 
-// GetColumnsToUpdate will filter all the `Invalid` columns so that we do not update it.
-// This is used mostly for the SQL MERGE queries.
-// TODO: Replace all uses of [GetColumnsToUpdate] with [ValidColumns]
-func (c *Columns) GetColumnsToUpdate() []string {
-	return ColumnNames(c.ValidColumns())
-}
-
 // ValidColumns will filter all the `Invalid` columns so that we do not update them.
 // This is used mostly for the SQL MERGE queries.
 func (c *Columns) ValidColumns() []Column {
diff --git a/lib/typing/columns/columns_test.go b/lib/typing/columns/columns_test.go
index 1ba0491f..f9e27943 100644
--- a/lib/typing/columns/columns_test.go
+++ b/lib/typing/columns/columns_test.go
@@ -132,60 +132,6 @@ func TestColumn_ShouldBackfill(t *testing.T) {
 	}
 }
 
-func TestColumns_GetColumnsToUpdate(t *testing.T) {
-	type _testCase struct {
-		name         string
-		cols         []Column
-		expectedCols []string
-	}
-
-	var (
-		happyPathCols = []Column{
-			{
-				name:        "hi",
-				KindDetails: typing.String,
-			},
-			{
-				name:        "bye",
-				KindDetails: typing.String,
-			},
-			{
-				name:        "start",
-				KindDetails: typing.String,
-			},
-		}
-	)
-
-	extraCols := happyPathCols
-	for i := 0; i < 100; i++ {
-		extraCols = append(extraCols, Column{
-			name:        fmt.Sprintf("hello_%v", i),
-			KindDetails: typing.Invalid,
-		})
-	}
-
-	testCases := []_testCase{
-		{
-			name:         "happy path",
-			cols:         happyPathCols,
-			expectedCols: []string{"hi", "bye", "start"},
-		},
-		{
-			name:         "happy path + extra col",
-			cols:         extraCols,
-			expectedCols: []string{"hi", "bye", "start"},
-		},
-	}
-
-	for _, testCase := range testCases {
-		cols := &Columns{
-			columns: testCase.cols,
-		}
-
-		assert.Equal(t, testCase.expectedCols, cols.GetColumnsToUpdate(), testCase.name)
-	}
-}
-
 func TestColumns_ValidColumns(t *testing.T) {
 	var happyPathCols = []Column{
 		{