Hey, I found out a bug which broke part of my gameplay.
I wanted to use 2/3/4 node pins, but after restarting engine the values were changed to 0/1/2. For now I can use 0/1/2 connected to Default branch, but just wanted to let you know about this bug 
Hello matmow,
After doing a bit of digging I was able to find that this is a known issue. I have provided a link to the public tracker. Please feel free to use the link provided for future updates.
Link: Unreal Engine Issues and Bug Tracker (UE-38760)
Make it a great day