Same issue here. The segments on the re-cut PNR show up in apparent-time order instead of actual-time order with timezone. So my LAX-IAH segment departing at 11:36 AM departs BEFORE my NRT-LAX segment, leaving "same-day" at 5:10pm, due to the dateline crossing.

I posted this in the Integration bugs thread, but didn't get any reply at all. I'm hoping that this is just a display-sort issue. My fear is that it's a segment-order issue that will create problems when trying to check-in for the NRT-LAX segment out-of-order...