I have completed the Breach Executable arena 3 times on expert this week, the 'higher level' challenge was then completed but no progress was made in the 'any difficulty' challenge. then i completed the arena 3 times on normal difficulty, it tracked my progress up to 2/3 and then after the 3rd completion it reset back to 0. i did 3 more arenas and the same thing happened, this is annoying because i want to complete the seasonal challenge to complete the breach executable weekly challenge. if anyone else has had this problem id love to hear from you. thanks. i have included a screen capture where you can clearly see the expert difficulty challenge is complete but the any difficulty challenge is not.