Now that the Astroport migration has happened and if you hadn’t moved your LP position over to Astroport before this, any of your LP positions that were staked are still staked in the Terraswap contact. To access your LP position and claim any previous ANC rewards you can directly access the Terraswap-version of the Anchor WebApp at https://terraswap-app.anchorprotocol.com/
Note that all your previous Terraswap LP tokens are still there, visible at the Terraswap version of the Anchor WebApp (see above). Your funds are safe.
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