The EPA (remember, think in terms of EPA Code, e.g. "C1") is being retired from the next version. This means that there will be no new version of that EPA Code in the next curriculum version. If you include an EPA with the retired code in the spreadsheet, it will not get uploaded. You are unlikely to use this status for EPAs unless there is an EPA at the end of your numbering that is being removed. For example, you have D1, D2, D3, D4 currently. You are retiring D4 from the next version and no new D4 will be uploaded.