Part(s) not staying ticked for replacement after deadline

I had a 19% suspension checked for replacement ahead of the next race, and now it's not ticked and I'm very anxious about whether or not the worn part will cost me my first DNF. 

I hope I'm somehow wrong and it's just a passing of the parts or something. Any ideas or is this genuinely a bug?

The setups didn't save either and now I'm pissed off.

There has been problems with this before.
It seems to be a really difficult error to find in an obscure piece of coding!

It's a shame how that happened, as there was an opportunity to jump about 5 spots in the constructors standings as it was the final race of the season in the group I'm in. Instead I trundled at the back of the pack and had the suspension fail for no other reason apart from this bug.

Quite disappointed, but I do understand it's a developing game and these things happen.

Eu tambem estou tendo este problema de nãp poder trocar peças do carro, já perdi duas corridas sem correr, tento fazer a troca e quando tento salvar, o sistema o troca a peça, estou meio desapontado e espero que resolvam logo este problema, se alguem poder ajudar desde já agradeço.

@Sandro: vôce tem suficiente mecânica?

Do you have enough engineers and/or mechanics to replace the parts?

Edit: e vôce sabe que há um prazo para trocar as peças de carro? É a 30 minutos antes da corrida..
You know there is a deadline for changing parts on the car? You can't save changes to the assembly and/or strategy page within 30 minutes before the race.

Be careful when using tabs, things get fruity, and it can also lock your livery if you were trying to compare 2 for the same car at once.