Where are "MyHours" in backup files?

We need to elaborate the working hours spent by collaborators in tasks, defects, ... in our projects.

We'd like to use ALMComplete to register these data (and we start doing so from last month), but we need to collect them for our statistics and elaboration, so we supposed to be able to get them from backup files.

But we don't find them. Are they hidden somewhere?

How could we collect them?