I am creating a Dashboard having 5-6 quick filters to manipulate.
I am trying to keep all filters global except for the "Year" because some worksheets show both data in "2011" & "2012".
In order to keep those worksheets independent, I tried to duplicate the data source, however, how can I keep other quick filters applicable to those worksheets?
Short answer - you can't in Tableau v7. Tableau v8 (which should be out in the next few weeks) has this feature.
A possible workaround in v7 is to use a parameter based filter instead of quick filters, but then you lose the range and multi-select options that quick filters have.