When attempting to save a document, if child windows are open, such as the Distributions window or Document Detail Entry, SOP will present a warning that the window must be closed before saving the document, but GP will not move the window forward to be closed or close it for you. This tweak will auto-close any open SOP child-windows when SAVE is clicked.
Navigation: Tools >> Setup >> Company >> Setup GP PowerPack
Mark the box next to TWK-SOP: Auto-Close Child Windows, then click DONE.
The feature will be enabled for the current user. Other users must restart their Dynamics GP client to enable this feature.