When you convert your CRV for yCRV on yearn, the CRV is locked forever. This means that your CRV will be locked in the yCRV contract and you will not be able to access or use it until the contract expires. This is different from the 4 year locking period for CRV, which allows you to access and use your CRV after the 4 year period has expired. By converting your CRV for yCRV, you are essentially locking your CRV for a much longer period of time, as the yCRV contract does not have an expiration date. This is beneficial for those who want to hold their CRV for a longer period of time and do not want to worry about the 4 year locking period.
