Currently, when you load data using the addJsonData method and the datatype is 'json' and you try local searching, all of the rows simply go away, instead of properly filtering the grid. By changing the datatype to 'jsonstring', the problem goes away and the local searching performs as expected (no change is needed to the incoming data).

Steps to Reproduce:

Create a grid with datatype: 'json' and do the following:

1) Load data to the grid using the addJSONData method.

2)Perform local search. This is how I am currently doing it: