Rocket.Chat/server/startup/migrations/v186.js

import { Migrations } from '../../../app/migrations/server';
import { LivechatInquiry } from '../../../app/models/server/raw';

Migrations.add({
	version: 186,
	up() {
		LivechatInquiry.find({}, { fields: { _id: 1, ts: 1 } }).forEach((inquiry) => {
			const { _id, ts } = inquiry;

			LivechatInquiry.update({ _id }, {
				$set: {
					queueOrder: 1,
					estimatedWaitingTimeQueue: 0,
					estimatedServiceTimeAt: ts,
				},
			});
		});
	},
});