diff --git a/output/schema/schema.json b/output/schema/schema.json
index fbc6096674..ce7c9a6d26 100644
--- a/output/schema/schema.json
+++ b/output/schema/schema.json
@@ -58379,10 +58379,19 @@
           "name": "preserve_original",
           "required": false,
           "type": {
+            "generics": [
+              {
+                "kind": "instance_of",
+                "type": {
+                  "name": "boolean",
+                  "namespace": "_builtins"
+                }
+              }
+            ],
             "kind": "instance_of",
             "type": {
-              "name": "boolean",
-              "namespace": "_builtins"
+              "name": "Stringified",
+              "namespace": "_spec_utils"
             }
           }
         }
@@ -59076,10 +59085,19 @@
           "name": "preserve_original",
           "required": false,
           "type": {
+            "generics": [
+              {
+                "kind": "instance_of",
+                "type": {
+                  "name": "boolean",
+                  "namespace": "_builtins"
+                }
+              }
+            ],
             "kind": "instance_of",
             "type": {
-              "name": "boolean",
-              "namespace": "_builtins"
+              "name": "Stringified",
+              "namespace": "_spec_utils"
             }
           }
         }
@@ -61059,10 +61077,19 @@
           "name": "preserve_original",
           "required": false,
           "type": {
+            "generics": [
+              {
+                "kind": "instance_of",
+                "type": {
+                  "name": "boolean",
+                  "namespace": "_builtins"
+                }
+              }
+            ],
             "kind": "instance_of",
             "type": {
-              "name": "boolean",
-              "namespace": "_builtins"
+              "name": "Stringified",
+              "namespace": "_spec_utils"
             }
           }
         }
@@ -61116,10 +61143,19 @@
           "name": "preserve_original",
           "required": false,
           "type": {
+            "generics": [
+              {
+                "kind": "instance_of",
+                "type": {
+                  "name": "boolean",
+                  "namespace": "_builtins"
+                }
+              }
+            ],
             "kind": "instance_of",
             "type": {
-              "name": "boolean",
-              "namespace": "_builtins"
+              "name": "Stringified",
+              "namespace": "_spec_utils"
             }
           }
         }
@@ -61614,10 +61650,19 @@
           "name": "preserve_original",
           "required": false,
           "type": {
+            "generics": [
+              {
+                "kind": "instance_of",
+                "type": {
+                  "name": "boolean",
+                  "namespace": "_builtins"
+                }
+              }
+            ],
             "kind": "instance_of",
             "type": {
-              "name": "boolean",
-              "namespace": "_builtins"
+              "name": "Stringified",
+              "namespace": "_spec_utils"
             }
           }
         }
@@ -63895,10 +63940,19 @@
           "name": "preserve_original",
           "required": false,
           "type": {
+            "generics": [
+              {
+                "kind": "instance_of",
+                "type": {
+                  "name": "boolean",
+                  "namespace": "_builtins"
+                }
+              }
+            ],
             "kind": "instance_of",
             "type": {
-              "name": "boolean",
-              "namespace": "_builtins"
+              "name": "Stringified",
+              "namespace": "_spec_utils"
             }
           }
         },
@@ -64068,10 +64122,19 @@
           "name": "preserve_original",
           "required": false,
           "type": {
+            "generics": [
+              {
+                "kind": "instance_of",
+                "type": {
+                  "name": "boolean",
+                  "namespace": "_builtins"
+                }
+              }
+            ],
             "kind": "instance_of",
             "type": {
-              "name": "boolean",
-              "namespace": "_builtins"
+              "name": "Stringified",
+              "namespace": "_spec_utils"
             }
           }
         },
@@ -108625,12 +108688,21 @@
           "description": "Indicates whether or not the index has been rolled over. Automatically set to true when ILM completes the rollover action.\nYou can explicitly set it to skip rollover.",
           "name": "indexing_complete",
           "required": false,
-          "serverDefault": false,
+          "serverDefault": "false",
           "type": {
+            "generics": [
+              {
+                "kind": "instance_of",
+                "type": {
+                  "name": "boolean",
+                  "namespace": "_builtins"
+                }
+              }
+            ],
             "kind": "instance_of",
             "type": {
-              "name": "boolean",
-              "namespace": "_builtins"
+              "name": "Stringified",
+              "namespace": "_spec_utils"
             }
           }
         },
diff --git a/output/typescript/types.ts b/output/typescript/types.ts
index 739eafd1d8..110755c9e5 100644
--- a/output/typescript/types.ts
+++ b/output/typescript/types.ts
@@ -4147,7 +4147,7 @@ export type AnalysisAnalyzer = AnalysisCustomAnalyzer | AnalysisFingerprintAnaly
 
 export interface AnalysisAsciiFoldingTokenFilter extends AnalysisTokenFilterBase {
   type: 'asciifolding'
-  preserve_original?: boolean
+  preserve_original?: SpecUtilsStringified<boolean>
 }
 
 export type AnalysisCharFilter = string | AnalysisCharFilterDefinition
@@ -4227,7 +4227,7 @@ export interface AnalysisEdgeNGramTokenFilter extends AnalysisTokenFilterBase {
   max_gram?: integer
   min_gram?: integer
   side?: AnalysisEdgeNGramSide
-  preserve_original?: boolean
+  preserve_original?: SpecUtilsStringified<boolean>
 }
 
 export interface AnalysisEdgeNGramTokenizer extends AnalysisTokenizerBase {
@@ -4466,14 +4466,14 @@ export interface AnalysisMappingCharFilter extends AnalysisCharFilterBase {
 export interface AnalysisMultiplexerTokenFilter extends AnalysisTokenFilterBase {
   type: 'multiplexer'
   filters: string[]
-  preserve_original?: boolean
+  preserve_original?: SpecUtilsStringified<boolean>
 }
 
 export interface AnalysisNGramTokenFilter extends AnalysisTokenFilterBase {
   type: 'ngram'
   max_gram?: integer
   min_gram?: integer
-  preserve_original?: boolean
+  preserve_original?: SpecUtilsStringified<boolean>
 }
 
 export interface AnalysisNGramTokenizer extends AnalysisTokenizerBase {
@@ -4530,7 +4530,7 @@ export interface AnalysisPatternAnalyzer {
 export interface AnalysisPatternCaptureTokenFilter extends AnalysisTokenFilterBase {
   type: 'pattern_capture'
   patterns: string[]
-  preserve_original?: boolean
+  preserve_original?: SpecUtilsStringified<boolean>
 }
 
 export interface AnalysisPatternReplaceCharFilter extends AnalysisCharFilterBase {
@@ -4743,7 +4743,7 @@ export interface AnalysisWordDelimiterGraphTokenFilter extends AnalysisTokenFilt
   generate_number_parts?: boolean
   generate_word_parts?: boolean
   ignore_keywords?: boolean
-  preserve_original?: boolean
+  preserve_original?: SpecUtilsStringified<boolean>
   protected_words?: string[]
   protected_words_path?: string
   split_on_case_change?: boolean
@@ -4760,7 +4760,7 @@ export interface AnalysisWordDelimiterTokenFilter extends AnalysisTokenFilterBas
   catenate_words?: boolean
   generate_number_parts?: boolean
   generate_word_parts?: boolean
-  preserve_original?: boolean
+  preserve_original?: SpecUtilsStringified<boolean>
   protected_words?: string[]
   protected_words_path?: string
   split_on_case_change?: boolean
@@ -9761,7 +9761,7 @@ export interface IndicesIndexSettingsAnalysis {
 
 export interface IndicesIndexSettingsLifecycle {
   name: Name
-  indexing_complete?: boolean
+  indexing_complete?: SpecUtilsStringified<boolean>
   origination_date?: long
   parse_origination_date?: boolean
   step?: IndicesIndexSettingsLifecycleStep
diff --git a/specification/_types/analysis/token_filters.ts b/specification/_types/analysis/token_filters.ts
index eddc8c3652..5fe3067feb 100644
--- a/specification/_types/analysis/token_filters.ts
+++ b/specification/_types/analysis/token_filters.ts
@@ -81,7 +81,7 @@ export class EdgeNGramTokenFilter extends TokenFilterBase {
   max_gram?: integer
   min_gram?: integer
   side?: EdgeNGramSide
-  preserve_original?: boolean
+  preserve_original?: Stringified<boolean>
 }
 
 export class ShingleTokenFilter extends TokenFilterBase {
@@ -136,7 +136,7 @@ export class WordDelimiterTokenFilter extends TokenFilterBase {
   catenate_words?: boolean
   generate_number_parts?: boolean
   generate_word_parts?: boolean
-  preserve_original?: boolean
+  preserve_original?: Stringified<boolean>
   protected_words?: string[]
   protected_words_path?: string
   split_on_case_change?: boolean
@@ -155,7 +155,7 @@ export class WordDelimiterGraphTokenFilter extends TokenFilterBase {
   generate_number_parts?: boolean
   generate_word_parts?: boolean
   ignore_keywords?: boolean
-  preserve_original?: boolean
+  preserve_original?: Stringified<boolean>
   protected_words?: string[]
   protected_words_path?: string
   split_on_case_change?: boolean
@@ -167,7 +167,7 @@ export class WordDelimiterGraphTokenFilter extends TokenFilterBase {
 
 export class AsciiFoldingTokenFilter extends TokenFilterBase {
   type: 'asciifolding'
-  preserve_original?: boolean
+  preserve_original?: Stringified<boolean>
 }
 
 export class CommonGramsTokenFilter extends TokenFilterBase {
@@ -260,14 +260,14 @@ export class LowercaseTokenFilter extends TokenFilterBase {
 export class MultiplexerTokenFilter extends TokenFilterBase {
   type: 'multiplexer'
   filters: string[]
-  preserve_original?: boolean
+  preserve_original?: Stringified<boolean>
 }
 
 export class NGramTokenFilter extends TokenFilterBase {
   type: 'ngram'
   max_gram?: integer
   min_gram?: integer
-  preserve_original?: boolean
+  preserve_original?: Stringified<boolean>
 }
 
 export class NoriPartOfSpeechTokenFilter extends TokenFilterBase {
@@ -278,7 +278,7 @@ export class NoriPartOfSpeechTokenFilter extends TokenFilterBase {
 export class PatternCaptureTokenFilter extends TokenFilterBase {
   type: 'pattern_capture'
   patterns: string[]
-  preserve_original?: boolean
+  preserve_original?: Stringified<boolean>
 }
 
 export class PatternReplaceTokenFilter extends TokenFilterBase {
diff --git a/specification/indices/_types/IndexSettings.ts b/specification/indices/_types/IndexSettings.ts
index 4126f37387..fcf8793198 100644
--- a/specification/indices/_types/IndexSettings.ts
+++ b/specification/indices/_types/IndexSettings.ts
@@ -274,7 +274,7 @@ export class IndexSettingsLifecycle {
    * You can explicitly set it to skip rollover.
    * @server_default false
    */
-  indexing_complete?: boolean
+  indexing_complete?: Stringified<boolean>
   /**
    * If specified, this is the timestamp used to calculate the index age for its phase transitions. Use this setting
    * if you create a new index that contains old data and want to use the original creation date to calculate the index