Hi CCUnityUser, Regarding the issue of losing Corrective Expressions when converting from HD Base to Game Base, this is actually a limitation of our specifications, not a bug. Corrective Expressions are specifically designed for more detailed characters (like CC3+ and HD), and when converting to Game Base, the character data—including expressions and polygon count—gets simplified, which makes it incompatible with Corrective Expressions. Please let us know if you have any further questions, thank you! Tina