Avoid losing styles in default custom RTE

src/dom_components/model/Components.ts

@@ -94,7 +94,8 @@ Component> {
     const prev = opts.previousModels || [];
     const toRemove = prev.filter(prev => !models.get(prev.cid));
     const newIds = getComponentIds(models);
-    opts.keepIds = getComponentIds(prev).filter(pr => newIds.indexOf(pr) >= 0);
+    const idsToKeep = getComponentIds(prev).filter(pr => newIds.indexOf(pr) >= 0);
+    opts.keepIds = (opts.keepIds || []).concat(idsToKeep);
     toRemove.forEach(md => this.removeChildren(md, coll, opts));
     models.each(model => this.onAdd(model));
   }

src/dom_components/view/ComponentTextView.ts

@@ -4,6 +4,7 @@ import RichTextEditorModule from '../../rich_text_editor';
 import RichTextEditor from '../../rich_text_editor/model/RichTextEditor';
 import { getModel, off, on } from '../../utils/mixins';
 import Component from '../model/Component';
+import { getComponentIds } from '../model/Components';
 import ComponentText from '../model/ComponentText';
 import { ComponentDefinition } from '../model/types';
 import ComponentView from './ComponentView';
@@ -152,7 +153,12 @@ export default class ComponentTextView extends ComponentView {
     // If there is a custom RTE the content is just baked staticly
     // inside 'content'
     if (rte?.customRte && !rte.customRte.parseContent) {
-      comps.length && comps.reset(undefined, opts);
+      comps.length &&
+        comps.reset(undefined, {
+          ...opts,
+          // @ts-ignore
+          keepIds: getComponentIds(comps),
+        });
       model.set('content', content, contentOpt);
     } else {
       comps.resetFromString(content, opts);