I've had BofA for several years and haven't experienced a mid-statement update. Is it possible you talked to them, GW'd them, wrote them, called them, disputed something, changed an address, or something like that? They will update mid-statement if you update any info with them. I used to update my address, and without changing or retyping anything, I would click "submit" and within a couple of days they would start to update my CRs. Cool service not offered by other CCCs.