[BUG] ERROR:mid_registrar:unregister_record: 'from' key not found, skipping De-REGISTER

[denyspozniak]

OpenSIPS version you are running

OpenSIPS v3.6.2

Describe the bug

Hey!

The problem occurs when the following modules have been configured:
clusterer + mid_registrar + usrloc (full-sharing-cluster)

The schema is classic:  User --> OpenSIPS cluser (anycast IP + Path) --> Registrar

To Reproduce

Simply configure the clusterer + mid_registrar + usrloc (full-sharing-cluster) and perform the registration.

Below is Claude's report on the analysis of the issue: CLUSTER_REPLICATION_BUG_REPORT.md

I appreciate that @liviuchircu worked on the issue 343f452c1, but there are probably still some things left to fix.

Thanks in advance!