Dear Aarron,
actually you have almost find the correct way to do that 
for now until we release changes in UI.
Here [NOT A BUG] Can’t import an image selection on a new project
is described how the Image selections work.
…Why do you export an “Images List” but you import an “Image Selection,” …
The link above also explains the terminology inconsistency since it really means something different
…and you export a “Registration” but you import a “Component”…
Component is just one of the export registration forms with its properties. In general by exporting registration it is known to export camera poses and cameras calibration in some form. You can export registration e.g. to Maya.
On the other hand we import just components, CMPMVS text files and bundle out formats.