Compiler warning after renaming variable in animation template

See UDN:
[Link Removed]

Create a project using third person template (C++ or Blueprint)
Open editor for the project
Navigate to the folder that contains the file ABP_Manny
Create an animation blueprint template called ABP_Locomotion
Open ABP_Manny asset
Copy Locomotion state machine from ABP_Manny to ABP_Locomotion and hook it up to the output pose
Fix compile errors by exposing variables and animation sequences from the Locomotion state machine
Replace usage of Locomotion state machine in ABP_Manny with the new animation blueprint template
Bind equivalent variables and compile both blueprints
Go back to ABP_Locomotion and rename a variable bound by ABP_Manny. I changed GroundSpeed to GroundSpeed2.
ABP_Manny when compiled now will still reference the old variable name and spit out a warning.