How do I convert my old BTT to new BTT?

Could you please elaborate on the process of converting my old BTT tokens to the new BTT? I've been holding onto my BTT for quite some time now and I've heard that there's been a token swap. Could you provide me with step-by-step instructions on how to do this safely and efficiently? Is there a specific exchange or platform I should be using? Additionally, will there be any fees associated with the conversion? I'd appreciate any information you can provide to help me navigate this process smoothly.