AnimMontage Wont Play Animations After retargeting Animblueprint

Im a beginner. I wanted to change the playermodel of the UE4 ARPG Sample character and still be able to attack etc. All in all I was able to fully retarget the AnimBlueprint and the new character model just played all the animations of the target just fine, atleast in the animation editor.

But when I change the old mesh now with the one of the new character model only the walk animation gets played but no others. Any know what I still need to do so I these get played?