Sorting Linked Data

[Gorze]

Hi i was wondering if anyone can advise me on a it seems impossible challenge.
I have a central spreadsheet which keeps data on groups which is fed in through a series of indivudal group spreadsheets. Is there anyway if in the central spreadsheet a persons group assignment is changed that the infomation attached to them can be moved with them through the group spreadsheets. If a sort is done in the central spreadsheet the infomation in the group spreadsheets remains in place. I need it so that when I sort the data on the central spreadsheet, the data from the group spreadsheets remains with the people on the central sheet.

Has anyone got any ideas that might be able to help me with this?