The Soviet Union kept two sets of historical archives, allowing only the most reliable and/or senior people inside the "real" one (for example, accurate data on

The Soviet Union kept two sets of historical archives, allowing only the most reliable and/or senior people inside the "real" one (for example, accurate data on Stalin's purges). They also kept two sets of economic statistics. As you suggest, it caused a lot of confusion. And, yeah, no one knew who had the correct information.