UpdateI tried a "gently encouraged resettlement". Here's what I did:1) I wanted the planet this civ species were taking up, so I abducted 12 of them and nuked the rest.
2) After that I found a suitable lone green orbit T0 planet in an uninhabited system far away and terraformed it to T3.
3) Then I dropped 6 of the ..uhm.. "encouraged resettlers" unto the surface and watched them build camps.
4) I left the system and when I came back they were all gone

5) Then I dropped the remaining 6 and plopped down a monolith RIGHT next to them (with no creatures nearby) and left the system.
6) After a while I was told that planet had an evolved species etc. etc. so I though GREAT! It worked!
7) ...except when the species went to space I paid them a visit and it was one of the ANIMAL races I'd seeded on the planet who'd evolved. No trace of the settlers >_<
That's a shame. I really wish "gently encouraged resettlement" was possible, it doesn't make sense that it isn't.
Perhaps in a patch or expansion
