According to PancakeSwap's official announcement on liquidity migration to v2: https://pancakeswap.medium.com/the-great-migration-vote-4093cb3edf23
This will change the LP token contract address, it means that LP token v1 and LP token v2 are completely separated, leading to a difference in the price of token when users swap between version v1 and v2 on PancakeSwap.
Furthermore, it has a big impact on the projects that are locked out of liquidity and on farms that are operating.
PancakeSwap no longer supports users to Add/Remove Liquidity v1
In order to support the projects that are providing liquidity at v1 of PancakeSwap (including UBU), we have developed USwap – a product that connects directly to PancakeSwap Router v1 which helps users swap tokens and provide Liquidity v1 of PancakeSwap.
The interface and functions of USwap are similar to PancakeSwap.
Step 1: Go to USwap: https://ubu.finance/uswap Step 2: Connect to Metamask Step 3: Select the token you need to Swap and customize the slippage Step 4: Approve (if any) Step 5: Confirm Swap
Step 1: Go to USwap: https://exchange.ubu.finance/#/pool Step 2: Connect to Metamask Step 3: Select the token you need to Add/Remove Liquidity Step 4: Approve Step 5: Confirm