We could have seen this coming back when Petite Elite attempted to adopt All Aboard Gone up in Prescott. I can't remember if the original owner was out of contact, but the logic was that the container was missing, so the cache could only be un-archived to the original owner, and not an adoptee.
I read something in the forums that hinted that archived caches will be taken off the maps soon, so the only way you would be able to 'find' them would be by knowing the waypoint ID, or perhaps by looking at someones found list.
Apparently 'cache permanence' is falling by the wayside, so stock up on 'Gladware' and just archive the cache and 'hide' a new one when the container disintegrates.

Richard Daines wrote:

There have been several conversations on the forum about just this topic and as predicted, this is the response. GC seems to lean to archiving rather that adoption if the original owner doesn't get involved. There is a similar cache here in Missouri that appears to have been quietly adopted but is Disabled none the less. Unless the original owner speaks up, I bet this one will be Disabled too regardless of it condition. I guess I can see the point that a cache needs an owner, a point of contact. Having to apply for a new cache at the location
seems extreme but this is how GC tries to have control.