Add another sandbox header to remove

src/submissions.js

@@ -1191,7 +1191,7 @@ function afcHelper_cleanup(text,type) {
 	text = text.replace(/== Request review at \[\[WP:AFC\]\] ==\n/ig, "");
 	text = text.replace(/(?:<\s*references\s*>([\S\s]*)<\/references>|<\s*references\s*\/\s*>)/gi, "\n{{reflist|refs=$1}}");
 	text = text.replace("{{reflist|refs=}}", "{{reflist}}"); // hack to make sure we don't leave an unneeded |refs=
-	text = text.replace(/\{\{(userspacedraft|userspace draft|user sandbox)(?:\{\{[^{}]*\}\}|[^}{])*\}\}/ig, "");
+	text = text.replace(/\{\{(userspacedraft|userspace draft|user sandbox|Please leave this line alone \(sandbox heading\))(?:\{\{[^{}]*\}\}|[^}{])*\}\}/ig, "");
 	text = text.replace(/<!--\s*-->/ig, ""); // Remove empty HTML comments
 	text = text.replace(/^----+$/igm, ""); // Removes horizontal rules
 	text = text.replace(/\[\[:Category:Articles created via the Article Wizard\]\]/gi, "[[Category:Articles created via the Article Wizard]]");