Selection API appears to keep select Count when data changes

I have a grid that can be manipulated with actions. When an action is made, it asks to refresh the grid and the data gets rewrited. But the selection count keeps the same. E.g.:

1- Have a grid. 2- Select a row. 3- Make an action on the row. 4- Refresh the grid. the row disappears because business rules. 5- Select another row. The count is 2