Letters to be issued to employees who are going to transfer from Partnership firm to Pvt. Ltd. Co.

We have two organisations; 1) Pvt. Ltd Company 2) Partnership firm
Under both the organisations we have appointed a staff. Now our Management has decided to close the partnership firm and wanted to shift the employees appointed under the Partnership firm to Pvt. Ltd. Co. As a HR Manager, kindly let me know what is the procedure for transferring the staff from Partnership firm to Pvt. Ltd co. ?
The staff who are going to transfer is appointed in January 2023 onwards.

Kindly provide the guidance with formats if any.

As the firms are separate and distinct, it is better to issue a fresh appointment order by the private limited company. Since the service in the partnership is limited to approx. 2 months, issue a comprehensive order terminating all the employees from a fixed date and issue a fresh order by the Private Ltd. Company taking them on the rolls from the next day. This would avoid later complications and avoidable headaches.