@Edwin-Jang
The "Recover seed" button in Sia-UI will sweep your funds from the seed you entered to the current wallet you are using in Sia-UI, thus all the funds from #1 was transferred/swept to wallet #2. Hence the 0SC you see in wallet #1 after you use the "recover seed" button. Using the same seed on 2 separate machine is not recommended as it can cause problems.
Help