Hello, I think it's possible automatically with a VBA macro.
It is probably this instruction that will be used: http://help.solidworks.com/2014/English/api/epdmapi/epdm.interop.epdm~epdm.interop.epdm.iedmrawreferencemgr.html
And there is even an example: http://help.solidworks.com/2014/English/api/epdmapi/Update_File_Raw_References_Example_VBNET.htm
It is possible to create a macro that will do this for a particular file, or even for all the files in the vault.
For an introduction to VBA, I recommend the macro I did, where I commented on each line for more understanding: