I split my work across Claude, ChatGPT, and Gemini depending on the task, and before this every useful answer just evaporated into whichever app I happened to be in that day. Having one folder structure that sits on top of all of them instead of being tied to a single AI's own history is the actual fix. The highlight feature is what I use most, being able to mark the one paragraph that mattered in a long thread and get a direct link back to it later beats re-reading a whole conversation to find it again.