Mystic Connection Spells & Spell Swapping

[Starfire Nevedalak]

I cannot swap out connection spells.

I am playing a mystic with the Mindbreaker connection, so at level 1 I get Mind Thrust I as a bonus spell. At level 4, I lose Mind Thrust I, replacing it with Lesser Confusion. I cannot swap out Lesser Confusion, but can I swap out a different spell (say, Detect Radiation) to regain Mind Thrust I?

Alternately, at level 7, I can learn another level 1 spell. Could I relearn Mind Thrust I then?

[HammerJack]

You don't need to. Knowing mind thrust II lets you cast mind thrust I.

[Starfire Nevedalak]

How'd I miss that?
Thanks!