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If you decide to register a feature dataset, stand-alone feature class, or table as versioned with the option to move edits to base, right-click it in the Catalog tree, point to Manage, then click Register As Versioned to open the Register As Versioned dialog box. Check Register the selected objects with the option to move edits to base. Checking this option causes edits that have been saved to the DEFAULT version, whether edited directly or merged from other versions, to be saved in the base (business) tables. Edits to other versions remain in the delta tables when you save.
Tamara,
As the below link mentions:
http://resources.arcgis.com/en/help/main/10.1/index.html#//003n000000rp000000
So basically, the edits done in DEFAULT version will directly go to the base tables. Edits done in other versions will go to the Delta (a- & d-) tables, for your case.
Hope this helps!
Regards,