Blank value for dhxCalendarA xcell

What is the proper way to add a grid row without a default date value. This grid is being loaded into a tabbar…

addRow deleteRow

The code which you provided is correct. If it causes problem for you - please try to use attached js file instead of original one.
In latest version - if no data was specified ( or it is empty ) then value set as empty cell, but while edit - current date will be preselected. (1.71 KB)

Did not correct problem. Also, If i change the xcell to ‘ed’ I can not edit blank/null entries in grid?

Please check attached sample - it uses code from your snippet and all newly added values correctly editable. (105 KB)