Currently, when exporting a photo, Mylio will only export whatever version is synced to the computer itself, even if an external hard drive is available with the full size Original. The full size Original may be located on the attached external drive, but it is not synced to the computer itself. We have a feature request open to have Mylio “fetch” the full size Original for export, but it is currently not something that Mylio can do. What you need to do is sync the full size Original to your computer, then you can export at the full resolution.
The easiest way to sync some Originals to your computer so you can export at full resolution is to setup a custom sync policy. You can setup a custom sync policy to sync a full size Original if it meets certain metadata requirements, like a certain keyword or star rating or color label. Once you’ve setup your computer to sync the full size Originals of anything that meets your criteria (like keyword “export”), any media with that keyword will have the full size Original synced to your computer.
To setup the custom sync policy, open the Mylio Dashboard (https://mylio.com/support/dashboard/), then click on your computer in the “Devices” section. Then, open the “Sync Policy Settings” and then “Customize”. In the Originals “tab” in the customized settings, choose your criteria, like keyword or color label. More information about setting up custom sync policies can be found on our Support Site here:
Once the full size Original is on your computer, you can export at full resolution.