Anyone else having trouble with the Dream Sprite?

Its not a huge issue, I have already mastered them and gave them to friends for their collection, now however when I get them back to max level (i tried 3 times now) and they explode, I leave the game and check my collection and there they are showed as level 1.

Its not a huge issue because like I said I have them mastered but it just looks nicer in my collection if they are all level 5 😂