I am going to take a totally different tack.
You have identified a system nonconformance, even before you found it in an audit. Why wouldn't you just document an internal corrective action request and figure out why you are changing your processes without following up with correcting documentation?
I agree that to wait for another division to draw your flowcharts is not a very effective method of maintaining your system. Heck, grab a pencil and a paper and draw them out, use Excel, use Word, buy a cheap flow chart software. Your other division has work of its own, you are never going to be at the top of their priority list.
Do your audits. If you do not create an internal CAR, I hope one of them is sharp enough to issue you two CARS, one because you identified the problem internally and did nothing about it, and the second because your process flows are out of date.
We need to take responsibility of our systems. We need to quit waiting for an auditor to point out a problem (internal or cb) before we fix it. My pet peeve is being told "why didn't your auditor find this? we knew it wasn't right." yeah, OK, so if it isn't right, do a CAR.
