When the change was made from Spycraft to Spycraft 2.0, the living play program was between "season 6" and "season 7". The scenario formatting changed notably, from the brochure style to a traditional document style.
At this time, the "old" scenarios were then considered to be "archived" and no longer available for play. However, several of the "archived" modules received a "Mission Conversion" errata that updated them for use with the new rules.
Following the widely used fan convention, the series here enumerates "archived" scenarios using the "SPA" prefix and the latter scenarios using the "SPY" prefix. The prefix is then followed by the play "season" and the scenario ordering within the season. For example, SPY7-04: The Watchmen indicates the 7th season and 4th scenario.