Forum:Xenon Capture

I have gone through the vortex dark tower quest and I first captured an oracle Xenon on the 3rd level then I went into floors 71-80  I faced off against 2 sir sancus xenon and managed to capture one of them but when I went to check my units I had just a normal Xenon. IS this normal that you battle a higher boss and get the first level of their avatar when you capture them? I have noticed this has happened to me before but with trash mobs as I fought and Ent and captured it but was given a trent in my unit section after clearing the stage. Its kind of a rip off if this is normal practice as I had to use some gems to survive the back to back onslaught of the max evolve Xenon.