Poses must stay within the pose directory but you should be able to move them in or out of any subfolder that you have or create under Libraries/Pose.  Be sure to move the .png thumbnail along with them.

This pretty much is the same thing for all the Library contents.  The only tricky part is moving cr2s as sometimes there is an .obj in there and that .cr2 is probably referencing that exact location for the .obj

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