SJCX token holders that did not convert their tokens can continue to hold them in their wallet, or send them to another compatible address. We encourage everyone who still holds any SJCX tokens to convert them to new STORJ tokens at their earliest convenience. However, if they elect not to do so, they should take into account that the old, deprecated SJCX tokens have no value on the Storj network, they cannot be used to rent storage space, pay for bandwidth used to download files, or any other Storj-supplied services. In order to take advantage of the Storj network, SJCX holders should submit their conversion requests while it is still possible to migrate the tokens. Please note that the converter is slated to be shut down at the end of 2019. For more about this planned shut-down, please read this blog post.