To update a *_dialog_ui.py file:

1) Run this (with the paths fixed for your machine):

C:\xms\devproj\trunk\Dev\GMS\APP\bin64\python\Scripts\pyside2-uic.exe [name]_dialog.ui > [name]_dialog_ui.py

or maybe

C:\xms\devproj\trunk\files_shared\bin\python\Scripts\pyside2-uic.exe [name]_dialog.ui > [name]_dialog_ui.py