diff --git a/integrationTest/integration_test.go b/integrationTest/integration_test.go
index 98401972b..384ddf6f6 100644
--- a/integrationTest/integration_test.go
+++ b/integrationTest/integration_test.go
@@ -1074,6 +1074,36 @@ func makeTests() []*TestGroup {
 			),
 		),
 
+		// Bug https://github.com/StackExchange/dnscontrol/issues/3493
+		// Summary: R53_ALIAS -> CNAME conversion doesn't work.
+		testgroup("R53_B3493",
+			requires(providers.CanUseRoute53Alias),
+			// Create the R53_ALIAS:
+			tc("b3493 create alias+cname in one step",
+				r53alias("dev-system", "CNAME", "dev-system18.**current-domain**.", "false"),
+				cname("dev-system18", "ec2-54-91-33-155.compute-1.amazonaws.com."),
+			),
+			// Convert R53_ALIAS -> CNAME.
+			tc("convert r53alias to cname",
+				cname("dev-system", "dev-system18.**current-domain**."),
+				cname("dev-system18", "ec2-54-91-33-155.compute-1.amazonaws.com."),
+			),
+		),
+		// Verify CNAME -> R53_ALIAS works too. (not part of the bug, but worth verifying)
+		testgroup("R53_B3493_REV",
+			requires(providers.CanUseRoute53Alias),
+			// Create the CNAME
+			tc("b3493 create cnames",
+				cname("dev-system", "dev-system18.**current-domain**."),
+				cname("dev-system18", "ec2-54-91-33-155.compute-1.amazonaws.com."),
+			),
+			// Convert CNAME -> R53_ALIAS.
+			tc("convert cname to r53_alias",
+				r53alias("dev-system", "CNAME", "dev-system18.**current-domain**.", "false"),
+				cname("dev-system18", "ec2-54-91-33-155.compute-1.amazonaws.com."),
+			),
+		),
+
 		// CLOUDFLAREAPI features
 
 		// CLOUDFLAREAPI: Redirects:
diff --git a/providers/route53/route53Provider.go b/providers/route53/route53Provider.go
index f4da1d783..1c610eadd 100644
--- a/providers/route53/route53Provider.go
+++ b/providers/route53/route53Provider.go
@@ -307,7 +307,6 @@ func (r *route53Provider) GetZoneRecordsCorrections(dc *models.DomainConfig, exi
 	if err != nil {
 		return nil, 0, err
 	}
-	instructions = reorderInstructions(instructions)
 	var reports []*models.Correction
 
 	// wasReport := false
@@ -409,27 +408,6 @@ func (r *route53Provider) GetZoneRecordsCorrections(dc *models.DomainConfig, exi
 	return append(reports, corrections...), actualChangeCount, nil
 }
 
-// reorderInstructions returns changes reordered to comply with AWS's requirements:
-//   - The R43_ALIAS updates must come after records they refer to.  To handle
-//     this, we simply move all R53_ALIAS instructions to the end of the list, thus
-//     guaranteeing they will happen after the records they refer to have been
-//     reated.
-func reorderInstructions(changes diff2.ChangeList) diff2.ChangeList {
-	var main, tail diff2.ChangeList
-	for _, change := range changes {
-		// Reports should be early in the list.
-		// R53_ALIAS_ records should go to the tail.
-		if change.Type != diff2.REPORT && strings.HasPrefix(change.Key.Type, "R53_ALIAS_") {
-			tail = append(tail, change)
-		} else {
-			main = append(main, change)
-		}
-	}
-	return append(main, tail...)
-	// NB(tlim): This algorithm is O(n*2) but it is simple and usually only
-	// operates on very small lists.
-}
-
 func nativeToRecords(set r53Types.ResourceRecordSet, origin string) ([]*models.RecordConfig, error) {
 	results := []*models.RecordConfig{}
 	if set.AliasTarget != nil {