Invalid statistic - Don't know what stat.killEntity.Creeper is

Step to reproduce :
1. Kill Creeper or other entity in the current release (1.10.2)
2. Launch the snapshot
3. Load your old world
4. Old killed entity statistic disappear from your world

Log :
[05:56:23] [Server thread/WARN]: Invalid statistic in M:\Minecraft\data\lets_play_and_snapshot\saves\Command Block\stats\eef3a603-1c1b-4c98-8264-d2f04b231ef4.json: Don't know what stat.killEntity.Witch is
[05:56:23] [Server thread/WARN]: Invalid statistic in M:\Minecraft\data\lets_play_and_snapshot\saves\Command Block\stats\eef3a603-1c1b-4c98-8264-d2f04b231ef4.json: Don't know what stat.killEntity.Creeper is
[05:56:23] [Server thread/WARN]: Invalid statistic in M:\Minecraft\data\lets_play_and_snapshot\saves\Command Block\stats\eef3a603-1c1b-4c98-8264-d2f04b231ef4.json: Don't know what stat.killEntity.Slime is

It should be convert from Creeper to minecraft:creeper because a new feature changes in the 16w32a snapshot.