> For the complete documentation index, see [llms.txt](https://docs.convexfinance.com/convexfinance/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.convexfinance.com/convexfinance/general-information/convex-for-frax-finance/understanding-cvxfpis.md). # Understanding cvxFPIS **cvxFPIS -** Convex-locked FPIS ### cvxFPIS is tokenized veFPIS * If a user deposits **FPIS** into Convex, that **FPIS** is locked forever on the platform as **veFPIS**. * A tokenized version of **veFPIS**, **cvxFPIS**, is returned to the user at a 1:1 rate. * **cvxFPIS conversion is 1-way.** Liquidity pools may exist that allow users to swap **cvxFPIS** for **FPIS** tokens. ### cvxFPIS Staking * **cvxFPIS** can be staked on Convex to receive fees one would get for staking their **veFPIS** on Frax, as **FPIS**. * Additionally, users staking **cvxFPIS** may receive the platform native token **CVX**. Frax has voted to merge FXS with FPIS governance tokens, and Convex has since sunsetted cvxFPIS and will be converting its FPIS to veFXS. **Convex Finance will support the migration of both FPIS and cvxFPIS to cvxFXS at a 3 to 1 ratio**. See more details about this in the [FPIS to FXS Migration section](/convexfinance/general-information/convex-for-frax-finance/fpis-to-fxs-migration.md).