I'd like to use the Edit menu's Find & Replace to bulk-change text within expressions only, not configurations. Is this possible?
Wait - do you mean expressions in a field using dynamic replace? if the expressions are in regular field you can treat them like text. If they are expressions in a formula tool - you can edit them via batch macro/action tool. Its probably easier if you post some data with clearer information on what you are doing and what you are looking for.