Lobo in Classroom to Different Monster?

I thought I was done with this thread but I ran into a problem... I created a new chest in the Falcon and placed a side boss I created in the chest. at 1st, I replaced the Single Lobo formation to be the boss and changed the 254 pack to my boss. The monster-in-box spot in the Falcon worked great and gave me the side boss. So I figured I didn't need the Lobo replaced anymore bcuz I made a pack with my boss. but now It's just the Lobo again. My boss is set to formation 490, and pack 254. but when I open the chest it loads the Lobo. How do I fix this issue?

EDIT: Nevermind xD. After re-reading what I typed and what Madsiur said I figured it out. I feel like a derp x3!