I have had this happen to multiple challenges. The Devils one and know tye Canucks one
*edit: also have the next gen weekn2 incomplete but saying I've completed
@IamAdeathMACHINE
All these objectives have a timer, as soon as this has expired, the objectives are no longer available and are marked as completed until they are removed.
The Devils and Canucks Objectives were Flash Objectives and only available for 4 hours.
Next Gen Week2 was available for 7 days (until Friday 5pm est)
Phastoalready gave you a good answer, but I wanted to add that the reason why objectives aren't removed right away when they expire is that EA wants to give us some time to claim our rewards when the objective has expired. That's why there is a window of time within which we can no longer complete the objective but we can still claim our rewards if we haven't claim them yet.
