getSelection() returns Store data, not grid data

I'm using a gridpanel which uses a store to populate the template-checkboxes in each column.

It seems that when I check some boxes, and do the following:

PHP Code:

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var grid = myGridPanel.getSelectionModel();
grid.setSelectionMode('MULTI');
grid.selectAll();       
var records = grid.getSelection(); 


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It's returning store values and not the up-to-date grid.

Thoughts?

the data is always only in the store. the grid just provides a view for the store data. its not clear to me what is not working and what you want to do. Could you explain it a little more please?

I wrongly assumed that a grid object would let me get at grid data. My intention was to let the user configure the checkboxes in the grid as desired, and make only one call to save/update the store.