Hi @BrianF_NZ ,
The backup object allows you to transfer your data to a USB drive, which you can then access. If your HMI supports email, the option will be available within the backup object. Here is a post on the setup process. LINK
The trend display history can show up to a maximum of 6 MB of data. Beyond that, the data must be saved to HMI memory or a USB drive; otherwise, it will be lost.