How do consulting/IB firms view expired GMAT scores?

I received deferred admissions to M7 as a senior in college and currently work at an operating company. As I'm planning ahead and considering various post-MBA routes, it occured to me that my GMAT score (which I took junior year) will have expired by the time I enroll to my M7.

I imagine that this could raise eyebrows since I won't be able to officially back up my score. Will firms be understanding? Really don't want to dig up my Manhattan Prep books to take the test again, so I'm hoping someone here can speak to this - especially for MBB/BB.