diff --git a/src/vs/editor/browser/services/abstractCodeEditorService.ts b/src/vs/editor/browser/services/abstractCodeEditorService.ts
index 53c5bac6f281..a7e8785c3a8e 100644
--- a/src/vs/editor/browser/services/abstractCodeEditorService.ts
+++ b/src/vs/editor/browser/services/abstractCodeEditorService.ts
@@ -120,6 +120,16 @@ export abstract class AbstractCodeEditorService extends Disposable implements IC
 		return this._transientWatchers[uri].get(key);
 	}
 
+	public getTransientModelProperties(model: ITextModel): [string, any][] | undefined {
+		const uri = model.uri.toString();
+
+		if (!this._transientWatchers.hasOwnProperty(uri)) {
+			return undefined;
+		}
+
+		return this._transientWatchers[uri].keys().map(key => [key, this._transientWatchers[uri].get(key)]);
+	}
+
 	_removeWatcher(w: ModelTransientSettingWatcher): void {
 		delete this._transientWatchers[w.uri];
 	}
@@ -145,4 +155,8 @@ export class ModelTransientSettingWatcher {
 	public get(key: string): any {
 		return this._values[key];
 	}
+
+	public keys(): string[] {
+		return Object.keys(this._values);
+	}
 }
diff --git a/src/vs/editor/browser/services/codeEditorService.ts b/src/vs/editor/browser/services/codeEditorService.ts
index 0cfba7fd7fbb..22f0e9e48449 100644
--- a/src/vs/editor/browser/services/codeEditorService.ts
+++ b/src/vs/editor/browser/services/codeEditorService.ts
@@ -43,6 +43,7 @@ export interface ICodeEditorService {
 
 	setTransientModelProperty(model: ITextModel, key: string, value: any): void;
 	getTransientModelProperty(model: ITextModel, key: string): any;
+	getTransientModelProperties(model: ITextModel): [string, any][] | undefined;
 
 	getActiveCodeEditor(): ICodeEditor | null;
 	openCodeEditor(input: IResourceInput, source: ICodeEditor | null, sideBySide?: boolean): Promise<ICodeEditor | null>;
diff --git a/src/vs/workbench/services/textfile/browser/textFileService.ts b/src/vs/workbench/services/textfile/browser/textFileService.ts
index 76be4e91cc23..355f94cb60dc 100644
--- a/src/vs/workbench/services/textfile/browser/textFileService.ts
+++ b/src/vs/workbench/services/textfile/browser/textFileService.ts
@@ -32,6 +32,7 @@ import { IFilesConfigurationService } from 'vs/workbench/services/filesConfigura
 import { CancellationToken } from 'vs/base/common/cancellation';
 import { ITextModelService, IResolvedTextEditorModel } from 'vs/editor/common/services/resolverService';
 import { BaseTextEditorModel } from 'vs/workbench/common/editor/textEditorModel';
+import { ICodeEditorService } from 'vs/editor/browser/services/codeEditorService';
 
 /**
  * The workbench file service implementation implements the raw file service spec and adds additional methods on top.
@@ -70,7 +71,8 @@ export abstract class AbstractTextFileService extends Disposable implements ITex
 		@IEditorService private readonly editorService: IEditorService,
 		@ITextResourceConfigurationService protected readonly textResourceConfigurationService: ITextResourceConfigurationService,
 		@IFilesConfigurationService protected readonly filesConfigurationService: IFilesConfigurationService,
-		@ITextModelService private readonly textModelService: ITextModelService
+		@ITextModelService private readonly textModelService: ITextModelService,
+		@ICodeEditorService private readonly codeEditorService: ICodeEditorService
 	) {
 		super();
 
@@ -517,6 +519,14 @@ export abstract class AbstractTextFileService extends Disposable implements ITex
 			if (sourceMode.language !== PLAINTEXT_MODE_ID && targetMode.language === PLAINTEXT_MODE_ID) {
 				targetTextModel.setMode(sourceMode); // only use if more specific than plain/text
 			}
+
+			// transient properties
+			const sourceTransientProperties = this.codeEditorService.getTransientModelProperties(sourceTextModel);
+			if (sourceTransientProperties) {
+				for (const [key, value] of sourceTransientProperties) {
+					this.codeEditorService.setTransientModelProperty(targetTextModel, key, value);
+				}
+			}
 		}
 
 		// save model
diff --git a/src/vs/workbench/services/textfile/electron-browser/nativeTextFileService.ts b/src/vs/workbench/services/textfile/electron-browser/nativeTextFileService.ts
index 0c1c8038bfb2..aa380e043fe6 100644
--- a/src/vs/workbench/services/textfile/electron-browser/nativeTextFileService.ts
+++ b/src/vs/workbench/services/textfile/electron-browser/nativeTextFileService.ts
@@ -38,6 +38,7 @@ import { IEditorService } from 'vs/workbench/services/editor/common/editorServic
 import { assign } from 'vs/base/common/objects';
 import { IFilesConfigurationService } from 'vs/workbench/services/filesConfiguration/common/filesConfigurationService';
 import { ITextModelService } from 'vs/editor/common/services/resolverService';
+import { ICodeEditorService } from 'vs/editor/browser/services/codeEditorService';
 
 export class NativeTextFileService extends AbstractTextFileService {
 
@@ -55,9 +56,10 @@ export class NativeTextFileService extends AbstractTextFileService {
 		@ITextResourceConfigurationService textResourceConfigurationService: ITextResourceConfigurationService,
 		@IProductService private readonly productService: IProductService,
 		@IFilesConfigurationService filesConfigurationService: IFilesConfigurationService,
-		@ITextModelService textModelService: ITextModelService
+		@ITextModelService textModelService: ITextModelService,
+		@ICodeEditorService codeEditorService: ICodeEditorService
 	) {
-		super(fileService, untitledTextEditorService, lifecycleService, instantiationService, modelService, environmentService, historyService, dialogService, fileDialogService, editorService, textResourceConfigurationService, filesConfigurationService, textModelService);
+		super(fileService, untitledTextEditorService, lifecycleService, instantiationService, modelService, environmentService, historyService, dialogService, fileDialogService, editorService, textResourceConfigurationService, filesConfigurationService, textModelService, codeEditorService);
 	}
 
 	private _encoding: EncodingOracle | undefined;
diff --git a/src/vs/workbench/test/workbenchTestServices.ts b/src/vs/workbench/test/workbenchTestServices.ts
index caceda8fef75..a6eb89007ebc 100644
--- a/src/vs/workbench/test/workbenchTestServices.ts
+++ b/src/vs/workbench/test/workbenchTestServices.ts
@@ -207,7 +207,8 @@ export class TestTextFileService extends NativeTextFileService {
 		@ITextResourceConfigurationService textResourceConfigurationService: ITextResourceConfigurationService,
 		@IProductService productService: IProductService,
 		@IFilesConfigurationService filesConfigurationService: IFilesConfigurationService,
-		@ITextModelService textModelService: ITextModelService
+		@ITextModelService textModelService: ITextModelService,
+		@ICodeEditorService codeEditorService: ICodeEditorService
 	) {
 		super(
 			fileService,
@@ -223,7 +224,8 @@ export class TestTextFileService extends NativeTextFileService {
 			textResourceConfigurationService,
 			productService,
 			filesConfigurationService,
-			textModelService
+			textModelService,
+			codeEditorService
 		);
 	}
 
@@ -1238,6 +1240,7 @@ export class TestCodeEditorService implements ICodeEditorService {
 	resolveDecorationOptions(_typeKey: string, _writable: boolean): IModelDecorationOptions { return Object.create(null); }
 	setTransientModelProperty(_model: ITextModel, _key: string, _value: any): void { }
 	getTransientModelProperty(_model: ITextModel, _key: string) { }
+	getTransientModelProperties(_model: ITextModel) { return undefined; }
 	getActiveCodeEditor(): ICodeEditor | null { return null; }
 	openCodeEditor(_input: IResourceInput, _source: ICodeEditor, _sideBySide?: boolean): Promise<ICodeEditor | null> { return Promise.resolve(null); }
 }