You generally have to tell it to. Since I didn’t read your original post properly, let’s start over (my bad).
First, add your column to the InventoryQtyAdjBrw dataview. You’re also going to create a new dataview for WhseBin (fill all fields with WhseBin).
Next, you’re gonna call the Erp.BO.WhseBinSvc rest-erp and within the response params, set the Param name to WhseBin, ViewName to WhseBin, and the path to returnObj.
Then you have to set up an iterative event with row-updates to take the data from the WhseBin dataview to the InventoryQtyAdjBrw dataview that has your new column.
This post outlines in a bit more detail: How To: Adding Columns to Existing Kinetic Grid - Experts’ Corner - Epicor User Help Forum (epiusers.help)