neiter you can. "and the return of what remained of the Kusari Navy from Tau into the core systems makes any operations within Kusari itself far more risky"
from BD story for .86 so indeed some part of fleet returned.
"Several thousand people were killed in those first few weeks of cruel fighting, and Kusari lost more than during a whole year of fights with Bretonia"
Kusari forces lost alot.. but not all as you like to believe.