the box office "Could" be reported to ERC that late, but do not hold your breath.
There has been an attempt to get Project Genome to reflect the adjusts of the StarBonds without the Zero Box Office attachements.
There are posts on this board from time to time that refer to the zero box movies, and it is not a bad practice to just check the limiteds from time to time yourself, just to see what has not reported box office.
Generally, if none is reported in the first week, it never will report to ERC. There are exceptions to that rule, but less than 1 out of 30