A skirmish took place in the Pleknok system between a Boadil family and a pair of Paataatus warships. The survey group's ship was damaged, but it was able to return to the Chiss Ascendancy and call for aid from the Chiss Defense Force. The Defense Force found the Paataatus doing their own survey of the planet and defeated them.
The skirmish took place 19 years before Thrawn and Thrass' mission to Pleknok, dating the event to by 38 BBY.