System 101 in game pbd4956 (Qucenn/Rarron), Saar controlled Rarron and Nekro (with an infantry on planet) controlled Qucenn, while Saar fleet with floating factory over top of it.
Activated 105 (Alpha asteriod field where second Saar factory was), used "Rowl Sarrig" to produce units at spacedock that was not blockaded. Gave the option to place on Qucenn (which I had mistaken for another planet I could have built on). Allowed placement onto that planet.
Ended turn, Qucenn showed 2 Saar infantry and 1 Nekro infantry on it, without triggering combat (still under Nekro control).
I'm not sure if the ruling of Rowl Sarrig is you can do an invasion without having to activate the system, but even if it is, the ground combat never triggered, and both infantry were on the planet.