When a member qualifies to be referred to as residential expert in the forum there should be some element of updates from him/ her...or atleast the moderators to update us about the expert absentia.

Specifically am asking about Modred he has been absent for long... anyone with updates?

We can't require something like that from a volunteer staff. People, including REs, get busy with other projects or study or life in general, or they just need a break. We wish Mordred well, and hope he can join us in discussion soon.

What Phi said.

Notification of absence would be at best a courtesy, not an obligation, and in the grand scheme of things, a low-priority one.

It’s also potentially a security risk to announce on a public site that you’re going to be e.g. traveling.