AMAZING Bands No Longer on Nuclear Blast!!??

Success Will Write Apocalypse Across The Sky (SWWAATS), Swashbuckle, Ex Deo (Kataklysm's alter-ego), and Annotations of an Autopsy are on the "former bands" list on Nuclear Blast, the one that confuses me the most is Ex Deo, because all except for one of the members are in the successful Nuclear Blast band Kataklysm, so wouldn't it be easier for everyone if Ex Deo was on the same record label? I would think so, if anyone knows anything regarding reasons for all of this please let me know.