Oh yeah, trend view solved another problem for me today as well.
There are a number of I/O lines where another control system sends me a recipe pointer. I start processing that workpiece and set a flag requesting the next queued job. I was asking, they weren't telling, despite there being physical work there.
Trend view showed my physical entry switch, my subsequent request for next part, and from them.....nothing. Later it was sending recipes spontaneously without being asked. Can't really argue with a trend view in a case like that.
In both cases, I just took a screenshot of Trend View, emailed it to the customer, and let him get it sorted with the makers of the other control system.