CE - Sheet Index add sheets

All

I have just noticed that if you try and add multiple sheet files to the sheet index, if these sheets have not been linked to a workset you will get the following message for each sheet you add.  Thus if you add 20 sheets and none of them have been linked to a workset you have to press Close 20 times on the dialog.  painful process for migrated projects

Question.  is there a way to link sheets to a workset without having to physically open them and link.   This would save a vast amount of time for projects that 100x sheets to process

Thank you 

Ian Lapper

Advanced Integrated Solutions