I have a similar problem with a series of caches near home (Granite Trail 1 - 10, Okehampton, Devon, UK)
They lead to a mystery cache, and they're all on a cycle trail - it'd be a shame to lose the series but some are missing now.
My question is - if I were to set for example 'Granite Trail 3A' at or near the original location of 'Granite Trail 3' which has been archived, is that ok?
The down side is that all of the history of Granite Trail 3 is lost, but I do at least get control of the cache.
However since the owner of the cache hasn't logged in for nearly 2 years, I think it ought to be possible to for me to apply for a 'caretaker' status - the cache owner still owns the cache, but I can maintain it. Then if the owner re-appears they can say 'thank you and goodbye' to me. Clearly the original cache (container and contents) belongs to the cache owner, but the listing on GC.com belongs to GC.com.
What do you think?
JamesOke