What I've done with different listing sites, if the same physical cache which I've already found and sign, then appears on an alternative site some time later. I've re-visited the cache and re-signed for the new listing on a different listing site.
So, if it was me, I would re-visit but have all the answers ready to send, so you could do it instantly after visiting the last location (if you are after a FTF).
But do it after the 9th, as I need a FTF on that date
But seriously, it is how you feel about it and how you like to play the game. We know some cachers would try and claim it from an arm chair if they could, having never visited the site
If you are not after the FTF, it would make a good excuse to re-visit on a lovely sunny warm day