grid -editable cell with dropdown values?

Suite 7.0/6.0/5.0 and Optimus Suite 5.0
#1

In our grid, we have column “Status”.

In grid we show many kinds of items. Each item type can different set of status.
Following is for illustration purposes.

Item Name Status(editable dropdown)
A Fixed (Correct values in Dropdown for status- New, In-progress, Fixed)
B In Stock (Correct values in Dropdown for Status - In Stock, On Order)

But drop down for Item A shows New, In-Progress, Fixed and In-Stock as possible values.
and for item B shows for status - In Stock, On Order and Fixed in drop down on clicking for edit.
Which is not what we want. (Status values come from DB.)

It seems dhtmlx grid automatically collects all values from the column and fills in any missing value before displaying the combo.

How do we disable this behavior?

#2

But drop down for Item A shows New, In-Progress, Fixed and In-Stock as possible values.
Do you mean drop down in the row or in grid header?
What column type do you use?
Also please check what value do you pass for cells from “Item A” column. It should be options values which should be defined before loading rows.