Couple of points....
1) Study Target -- in order for a target to have been studied, he must be in the presence of the caster of the spell. The caster has to be able to see him with his own eyes. And personally, I would rule that the caster can only Study a target within 20'-30' of himself (depending on how crowded, and other circumstances - possibly even less distance), otherwise he won't get enough detail to have the character properly studied. The spell targets the caster, and basically only works to allow the caster actually memorize physical form and mannerisms.
2) A spell like "Finding" requires a Mind Store spell be cast on the target (and it is a Utility spell, so cannot be cast on an unwilling target (the range is touch, not self like Study Target, so the target of Mind Store MUST be willing - though there is an option for use against unwilling targets, but that is VERY expensive).
3) Spells like "Scrying" have a specific range in which they will work, and thus are only effective within that range.
4) Scrying and similar spells do NOT give the location. The caster might recognize a location seen in the spell, but it does not give his location. When scrying a person, he will only know for sure that the target is within the range of the spell, not which direction, not anything else, unless visual clues in the vision can be used to pinpoint the location based on actual knowledge.
5) These spells have options that makes the "studying" be not required. All in all, a target being "Studied" via the "Study Target" spell isn't that big of a deal because if the foe is powerful enough, then the target doesn't need to be studied anyways.....