Strange problem,3dsmax didn't give any errors to me,but the bone3 and bone4 did't have any keys??? after i deleted the badmodel and baked again all is ok.A very strange problem,i gather there is some mistakes with array defining.
I'll inspect it later.
note that:the button "parent" should pick the root of all bones.
I get the right scene at second baking:
Now i test the sence but nothing happened,in spit of restart 3dsmax for N times,the problem i get just now never happened again???It really baffle me completely.