Client certificate information is not replicating across domain

I have multiple servers running R6.0.5 up to R6.5.5. The servers are in different locations, and are connected via VPNs.

I do all of my recertification on my LONDON based server. However, currently when I recertify my notes users, their certificate information is not replicating to other servers.

I can change phone numbers or assistants or anything else on the same record, and that information replicates over to the servers offsite - however, their certificate dates do not.

This means that when I use the CONFIGURATION > CERTIFICATES > CERTIFICATE EXPIRATION view in Domino Administrator, the data changes depending on which server (and therefore Domino Directory) I have my Admin client pointed at.

The byproduct of this is that I have recertified three of my USA users. As the new certificate details will not replicate over, their ID files are not picking up the new dates. I cannot recertify them off a USA server, as I do not have a certification log file on the servers (and don’t really want to create one).

In the past, I have done all my user admin from my LONDON server, so not sure how/what broke this process. Does anyone have any ideas how to troubleshoot this?

Thanks!