Yes, definitely upload the my finds query, and only send the unfound part of your file to your GPS. When I run the Pocket Query for caches to go hunting, I ask for caches that I don't own, haven't found, and which are enabled. I also limit it by asking for terrain less than 5 since most of the unfound caches near me are paddle caches. There are still times, when I will have a cache loaded that has been deactivated or archived, so periodically, I delete everything from my GPS and load a new PQ.