[/quote]You don't have to, if you really need to prune, you just have to make sure that the wallet is loaded before syncing Bitcoin Core so it won't have to use rescan.
In your case, you wont have to resync again after it's done since you've now loaded the wallet (see if it's selectable from the "Wallet:" drop-down menu at the right).


Finished synching but on the drop-down menu I only see the test wallet and not the old wallet. Here's a step by step on what I did from the beginning, maybe it will help. 1. Run Bitcoin core 2.Uncheck prune storage 3.Create test wallet(which gave me the wallet folder)> Go to bitcoin core data directory>test wallet folder> rename wallet.dat to wallet-test.dat> copy old wallet.dat and paste in test wallet folder 4. Let Bitcoin Core synch 5. Close BTC core and rerun 6. File> Open Wallet which only shows test wallet. I believe I messed up somewhere along the line but this is the complete breakdown.