Grid Grouping Problem (after loaddata manually)

[adanali]

http://docs.sencha.com/extjs/4.2.1/#!/example/build/KitchenSink/ext-theme-neptune/#grouped-grid

I have grouped grid like here. After page load my grouped grid it seems no problem. But after i load data manually, a new row is created but not in its group. When i reload page my new row is in its group (manually loaded data saved to db).

After i loadata i tried
grid.getView().refresh() but problem isn't solved. How i can fix this?
(And sorry for bad english)

[adanali]

Thanks to moderators, they give OK to my question after 5 hour later and i fixed my problem in the meanwhile. (removing all data from store and load all data to store again)

My problem is solved partially.