How to export Federation data related to partnership and entities that
created in the AdminUI ?
Out of the box there's no such functionality to export the Federation
object only, including the entities.
Note: The -xe and -xp options cannot be used with -xo, -xo-add,
-xo-replace, -xo-overlay, or -xf. The -xe and -xp options supersede
the -xa option to extract all policy data, except federation related
objects. You can also use the -xb option, which lets you backup the
entire policy store, including Policy Server location-specific data,
such as the policy store location.
It seems there's a work around as combination of the selections of the
objects using XPSExplorer, putting them in the XCart, you might be
able to achive exporting only the federation data.
XPSExport - How to export Federation objects only
Migrating Individual Objects with XPSExport