When you apply changes using the Set View Options and Set Filter Options dialog boxes, the changes only apply to the current session. If you want to save the preferences so they will be used the next time you open File Manager:
Set the preferences that you want and apply them (using Set View Options and Set Filter Options in the View menu).
Choose Save As Default Options from the View menu.
These changes to the default view will not take effect until the next time you click the File Manager control in the Front Panel.
After saving the current preferences, all new File Manager views you open use the new preferences and filter list.