You are correct, it will only show 100 days in the past. Worth noting that on hold jobs don't have that same restriction, the logic being that you really should be completing jobs that were scheduled more than 100 days in the past unless there was a specific reason you actually didn't go out there, and that's a perfect reason to put it on hold to reschedule for the future when that reason has been resolved!
Example: waiting on a part to come in
