If you split, and also set the css style of the cells via:
the split columns are copied to the right side of the grid. Is this fixed in 1.6?
This is fixed in latest version of the grid.
Basically, if this is only reason to updated grid version - most probably we will be able to send some kind of patch to your version of the grid.
You can contact us directly at email@example.com ( please provide info about used version|build and reference number )