Transfering trainee to a regular employee without rehiring and using a new hire date

Summary

Is there any action we can use to transfer a trainee to a regular employee without rehiring and also using a new hire date?

Content

Hi Gurus,

Is there any action we can use to transfer a trainee to a regular employee without rehiring and also using a new hire date?

We couldn't find any way to do this. I'll be glad if you share any idea.

Best Regards,

Burakcan