I got this hunch that for some reason Jorbtar simply does not want additional check-boxes in the UI. So how about this?
*By default, you can't take out curiosities out of study screen, whether it is by shift-clicking or grabbing them into cursor, or in any other way used to move stuff in regular inventories.
*You can right-click a curiosity in the study screen and select "remove" which will place the curio in your inventory (or on cursor if it does not fit.)
*If Jorbtar is feeling extra generous, also have the option to "move" where you can place the curio in a different slot in the study screen without resetting the study timer.