Copy a cost control setCost ControlYou can copy a set to preserve a reporting period before you carry on booking into the next one.A set is a running record, and running records get overwritten. Copying is how you keep a period's closing position before the next period's bookings change it.1. Open Copy Cost ControlFrom the set dropdown, or the copy action in the Cost Control Sets manager.2. Name the copyThe field starts as *Cost Control Name (copy)*. Replace it with the period it preserves — *Cost Control as at 31 March* is worth more in six months than *Cost Control (copy)*.3. Create CopyThe copy is a set in its own right, on the same budget, with the same accounts, cost items and forecasts.Copy before you importThe import dialog offers to make this copy for you, and recommends it: *Do you want to create a copy of the cost control dataset before you import accounting data? (recommended)*.Take it. An import brings in hundreds of bookings at once and can consolidate forecasts as it goes; a copy made beforehand is the only way back to how the set read before that happened — see [import accounting data](/kb/article/import-accounting-data).Copies do not diverge on their ownTwo sets on the same budget are independent. Booking into one does not touch the other, and both still read the same locked **Budget** column — which is what makes them comparable.That is the useful property: opening last quarter's copy beside this quarter's set shows how the forecast has moved against an unchanged plan.Markdown