Where to set new UUID for PV & VG of LVM

I have 2 instances running on AWS. Instance A (main instance) and Instance B (rescue instance). I detached volume from Instance A and attached it to Instance B to perform some changes why because I am unable to login inside Instance A due to SSH issue. After doing changes on Instance B the UUID of the PV & VG are now changed. Now I cannot directly attach this volume back to Instance A as obviously it will fail because previous UUIDs are no longer present. How to tell Instance A to start using new UUIDs ? Is there any configuration file in Instance A where I could update the UUID directly ?