Invalidate-registrations flag

Hello,

I run AP6300, SCZ8.4, access environment.

There are two registrars in a hunt strategy SAG. Either one has set 'invalidate registration'. If the 1st agent goes OOS, what should I expect? Should the SBC deregister all EPs registered on this registrar? Or???

The goal is to move all EPs to registrar2 if registrar1 is OOS. Is there any other way how to achieve this?

I use 'standard' registration, i.e. not surrogate registration.

Thank you,

Pete