To switch the enemy direction, I used this instead:
private void OnTriggerExit2D(Collider2D sensorCollider)
{ // Enemy, change direction at end of ground.
FlipEnemyFacing();
moveSpeed = -moveSpeed;
}
private void FlipEnemyFacing() // Flip Enemy X scale (sprite, colliders, etc.)
{
transform.localScale = new Vector2(-Mathf.Sign(myRigidBody2D.velocity.x), 1f);
}
Jim