No. The USxS Redesign migration process will only extract from the district's current operational data files (i.e. "live files"). These files typically contain between two and ten years of historical data (depending on local ITC policy). The Redesign projects will import all relevant data from the current files. But it can not import data from historical copies of data files being used as archives.
Typically, most ITC's maintain historical copies of USxS (and others systems). These "snapshots" of the data are generally taken at the end of the fiscal or calendar year. Users at each ITC have a method of "switching" into a particular archive, either by menu option or an alternative username. Because these are complete snapshots, they contain a complete copy of all current and historical transactions at the time of the snapshot.
There are several difficulties with attempting to migrate snapshots of historical data into a Redesign operational database:
Due to these difficulties, it would be impossible to merge historical archives into an operational database. Doing so would likely result in a corrupt Redesign data set which could never balance or be internally consistent.