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So basically the question is: once you have displayed the contents of a cursor on a grid, can you re-sort or re-query again, thus updating the cursor, and display the updated cursor on the same grid?
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Sure, just set the order of the cursor and invoke the Refresh of the grid.

If you change the contents of the cursor, in effect, overwriting the cursor, be sure to do something like this:

Grid.Recordsource = ""
*/ Requery here...
grid.recordsource = 'aliasname'