Crypto.com is encouraging MCO holders to swap to CRO. This is because the Crypto.com ecosystem will use one streamlined token (CRO) with the combined functionality, rather than two separate tokens (CRO and MCO). All functions currently attributed to MCO will still exist and will be preserved, but will be enhanced and represented by CRO. More information https://blog.crypto.com/important-announcement-mco-swap/