[Arkcon]

Originally posted by oleg:
Yes, they lose all race-specific traits

To make them loyal, drop a lot of troops into that planet. Also station a BIG fleet around it. Eventually everything will be all right. SE handle planet mood in step-wise fashion: every turn the mood either increases or decreeses depending of all factors involved. Your urbam pacification centers will make them all happy eventually.

Troops work in proprotion to population. So in addition to the troop drop, load as much population on the transport.

If the transport is full, and they're still rioting -- well, just wrestle between your conscience and the ol' jettison cargo button.