How do I keep sprite from inadvertently switching animation

I have a sprite flying a circuit around 3 nests. Going to the left it has one animation, flying to the right,another. Once it starts going to the left switches from correct animation for a second to then back to the animation it was on before it switched directions. Any ideas on why it switches back. Thanks.

https://www.dropbox.com/s/xd0wv5g9o7ycn ... .capx?dl=0

Hi, see this capx :

https://www.dropbox.com/s/y9mpja257uz7b ... .capx?dl=0

setting mirror did the trick. Many thanks!