log a change in index for comparison to other branch
Revert "log a change in index for comparison to other branch"

This reverts commit e3e2f589f3d9fdc8996b754ce9e1a4cc5da5cb25.
Revert "Revert "log a change in index for comparison to other branch""

This reverts commit 3d2237fbfc3b332df3c5beb58f0f5329b2a1872f.