Yes, I use the partnership EIN for each activity. 

My folks with fewer separately-stated activities have never gotten a matching notice. My folks with more separately-stated activities have also never gotten a matching notice, but even with an Excel schedule calculating what the Lacerte presentation ought to be, it takes me hours to proof SchEp2. The IRS computers don't stand a chance.

The last time I had a "prove every number on this tax return" audit, the in-person auditor, with a copy of the complete return showing Sec 179 carrying forward to the current year and limited to the amount of business income, asked me why the return didn't deduct the full amount of Sec 179 arising on the current-year K-1. The IRS folks who deal with 1040s are not particularly savvy when it comes to entity issues, which is no surprise - no one can know everything. The switch to BBA / Centralized Partnership Audit Regime IMHO was implemented as a partial solution to that problem.

The requirement to attach basis schedules is a way to keep honest people honest, not a way to catch cheaters.