What is the benefit of the column NONE in selective Access? Does somebody really use it? I would prefer that you always need to upload the new Read and Write in full and that the NONE is not needed anymore. The options that you now have to upload security is: 1) first load the user with no access in order to clear all security and then load the new Read/ write combinations 2) Remember what first was loaded on READ and WRITE and then import those value in the NONE column before you can apply the new security. Who has a use case where the NONE is really beneficial. I never have build an application where I have an incremental update of security.