I would think that there should be some kind of filter hook for the search function… I’ve now asked as much. Unfortunately it takes much longer to get a reply from Toolset than you! 😛
Hopefully they have some kind of solution..
It’ll likely have to be requested as a feature. Or escalated to a developer if toolset’s support has some sort of levels where level 1 has to escalate advanced inquiries to level 2 support. 😀
As much as we’d like to help, this may require modifying a third-party plugin’s codes and it’s really beyond the scope of GP and GP Premium as this is something normally done by their developer.