Two problems about model making(Retera Model Studio)

[Augustus Xin]

I met two problems when I made the model.The first problem is that when the spliced model performs an action,Some equipment and body parts will disappear.Especially when splicing heroic equipment.
The second is that I don't know how to modify the sound when the unit dies.I made a model of a female warrior.Based on footman.Death is footman's death voice.I don't know how to change itI hope someone can help me.