First time on SAS. What's their "typical" flight change schedule right now?

Just got a notice for an ORD-DUB routing in April that my flights changed - looks like they pushed me forward a full day (leaving on 12th vs. 11th). Their systems haven't updated with the new schedule, apparently, to see what's available on the 11th.

Assuming there's no ORD flight any more that works on the 11th, would they change the point of origin in the US (I'm having to get to ORD anyway, just as easy to get somewhere else: DFW, HOU, NYC, DC, etc.)?