I just enabled export permissions for the exchange and several wallets, so I won't be staring at a bunch of "transfer back and forth" records at the end of the year. Honestly, the sooner you keep evidence, the more peace of mind you'll have: every time I make a large rebalancing, cross-chain transfer, or open/close a loan position, I casually jot down a note, and I also upload a screenshot to the cloud drive. Otherwise, when it comes time to report, I simply won't remember why I did that transaction. Recently, the NFT royalty controversy has been intense, and I think it's even more unreasonable to expect platforms to always provide you with complete transaction records. When rules change, data standards change too, and in the end, you're the one who gets frustrated. Anyway, my current principle is: if it can be automatically synchronized, I do it; if not, I manually back it up. I keep an eye on liquidation thresholds, and I just want to avoid tax issues.