Why does data need to be migrated for bisects to succeed?

The perf-id is now updated to be the configuration name: crbug.com/817823

I was under the impression that the bot was a part of the unique path to the time series, but obviously you know more than I do there.

Hmm not sure a migration is necessary for bisects to succeed, Pinpoint was already updated with data on linux-perf so any new anomalies that come in should work.

I think a migration is only necessary if you want to retain the old data, if that's the case then we can probably drop this to a p2 or something.

This is not necessary for successful bisects, it is only if we want data continuation in the graphs.  Lowering priority.

Ran the migration this afternoon, surprisingly only took 2-3 hours. Everything seems to be on linux-perf now.