Make sure you have the Grain check-box checked on your material in Preferences/Define Stock Materials.
If you don't have that box checked the program assumes there is no grain direction and will nest parts both vertically and horizontally. If you have the box checked check the grain orientation on your parts in the cabinet editor and make sure it is correct.
There is no way to drag and drop parts from one sheet to another in the nest but you can use the right click menu in the cabinet editor and choose "Group Parts" and group certain parts like doors and Drawer fronts together so that they are nested from the same sheet.
If you have cabinets within your room or batch, you will need to save your job (file, save job as). Then click on the CNC button at the top right of your screen. You will then load your eCabinets job to create the twd file. It is not neccessary to nest within eCabinets before creating the twd file. The nesting within eCabinets will however give you a good understanding of how many sheets it will take for a particular job and like your case, you noticed that your doors were nesting wrong due to the grain. You can filter within eCabinets but can also be done in the Shopbot link in the Load screen area.
Kerry Fullington wrote:There is no way to drag and drop parts from one sheet to another in the nest but you can use the right click menu in the cabinet editor and choose "Group Parts" and group certain parts like doors and Drawer fronts together so that they are nested from the same sheet.