Normal
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/* Style Definitions */
table.MsoNormalTable
{mso-style-name:"Table Normal";
mso-tstyle-rowband-size:0;
mso-tstyle-colband-size:0;
mso-style-noshow:yes;
mso-style-parent:"";
mso-padding-alt:0cm 5.4pt 0cm 5.4pt;
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Normal
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Normal
0

/* Style Definitions */
table.MsoNormalTable
{mso-style-name:"Table Normal";
mso-tstyle-rowband-size:0;
mso-tstyle-colband-size:0;
mso-style-noshow:yes;
mso-style-parent:"";
mso-padding-alt:0cm 5.4pt 0cm 5.4pt;
mso-para-margin:0cm;
mso-para-margin-bottom:.0001pt;
mso-pagination:widow-orphan;
font-size:10.0pt;
font-family:"Times New Roman";}

Every so often when performing our daily scheduled differential backup, I get the below error.

Backup- \\<SERVER>.<do.main>\D: 

V-79-57344-65033 - Directory not found. Cannot backup directory \All_Systems_Flat_Backup\<sub_folder>\Teams\U_Drive\Team HR\Employee Development\MANAGEMENT ESSENTIALS and its subdirectories.

Note: Click 'Edit Selection List...' to display the View Selection Details tab of the job's selection list. Select the entry with the directory that no longer exists and click Delete to remove it.

The error is “correct” the folder does not exist; it’s normally been deleted or renamed.
In the selection list I tick the parent folder, in this case called ‘All_Systems_Flat_Backup’ to backup all of the subfolders (except one), as shown. 

 
The content of the subfolders change daily, is it not reasonable to assume that users will delete subfolders occasionally? Do I have to refresh the selection list every day??

I don’t get this error often, about once every 1-2 weeks, but this job “failure” is ruining my perfect stats! :)

How do system admins of larger implementations deal with this annoyance?

Any help would be most appreciated.