Can you upload spectrobes from spectrobes 2 onto spectrobes 3?
No but after you defeat the boss on Menahat, you can talk to
this one fat guy that kinda follows you around Menahat with 2 other
guys to try to find the ruins before you and he will give you this
machine that transfers Metallic Rygazelle and Metallic Leopuba over
to your Cosmolink (but you have to have spectrobes beyond the
portals)