If you clean up everything, then:
1) in the Configurator, save the configuration,
2) create a new blank database,
3) load the new base configuration from the original database
4) save and get a completely empty database
If you need to perform a convolution data, this is done with special treatments. On the disk and on the website its got the handling of the "Convolution information base
", which is suitable for most popular configurations. If you don't, then Google other solutions for sites 1C-nicknames (like infostart.ru). If there's nothing to find, you will need to order specialists the writing of this treatment under your base.