Are you recreate dbf/cursor every time you execute new SQL statement?
That's the problem !
Try this :
1.Create temporary file(Grid Record Source) on Grid/Form Init
2.Place the SQL statement result in other temporary file
3.Zap Grid Record Source
4.Append SQL result to Grid Record Source cursor/file

After cursor recreation, it opens in a new area, but Grid is connected to the first.

Best regards

Sevdalina Draganova