Why were 5 weeks cut off of operation 1?

Did I miss something? I can’t find anything that states why OP 1 is no longer 17 weeks; but instead, 12 now.


Someone said the 17 weeks was a bug they fixed.

They said some time ago that OP2 would begin on December but the 17 week put it in late January. They finally bothered to fix it and surprisingly it was not at the last possible minute.