By default auto-propagation is automatically enabled.
Select File > Options. The Options dialog box is displayed.
Select Editor > Auto-propagation from the navigation tree.
On the Auto-propagation page, clear the selection from the Auto-propagation check box.
Click OK to save your settings and to close the Options dialog box.
The default setting for auto-propagation is now disabled.
Options Dialog Box: Auto-propagation
Auto-propagate Confirmed Translation