This read-write attribute governs the entire statistics-collection model on the system: previousCounts copies current counters into the corresponding previous-period counters every 15 minutes, while wrapCurr disables that copy and simply lets the current counters wrap; the description states previousCounts must be selected whenever NMAPS is being used, and it is the default. This single setting is what makes every 'Prev' statistics object throughout the MIB meaningful at all, and it's also the gate that must be set to wrapCurr before any of the various per-group ClearStats attributes will actually succeed. For example, an admin who set hcxStatsControl to wrapCurr for isolated testing might later be confused to see every stuStatsPrevAtmTei-style object staying frozen at zero, not realizing that mode stopped the current-to-previous copy entirely.