This certainly doesn't excuse any of the concerns, but I will say that periodically, school districts change IEP software, and the old documents sometimes have to be handcopied (!) into the new software (we've been through this twice in the time I've been in my current job), with many odd slips occurring in the process. So it's just possible that she didn't write the new IEP from an electronic duplicate of the old one, like one would have expected.
Also, did your DS transition from a preschool-type plan to a more academic plan this year? Systems sometimes have templates that they want liaisons to use in writing IEPs, which are different depending on the disability classification or grade level.
Again, not excusing anything, just attempting to propose explanations.
