Split Struct nodes do not update if the struct variable is changed

If a struct variable inside a blueprint has its node split, changing the variable form one struct to another does not update the split pin. Recombining / resplitting the struct has no affect.

Workaround:
recombining the struct and then changing its type will properly update the node when splitting again

Regression:
No - Same behavior occurs in 4.16.3 (CL 3561208)

1. Open UE4 Editor (any project)
2. Add blueprint based on actor (MyBP)
3. Add new variable and set the type to AIDamage Event struct
4. Add get variable node to the graph
5. Right click node and select Split Struct
6. Change variable type to AIDynamic Param
7. Repeat steps 4 and 5

Result:
After changing the node type the first split struct still shows AIDamage Event related pins

Expected:
1) After changing struct type, split pins update to the new struct

Split struct BP nodes don't update or throw warning when changing struct