Conditional Formatting Not Working

Hey guys,

Here to be saved once again (hopefully) by this helpful community.

Long story short, we have conditional formatting on a sheet. I cut and pasted one row and placed it elsewhere on the sheet. I deleted some cells on the row that I pasted, and it affected ALL of the other cells that contained the same thing. In this case, every cell that contains the / symbol has been affected. Please see the screen shot for details.

https://i.gyazo.com/e6ad75e14502a31c...eaf47661c7.png

I've got conditional formatting that should make every cell that contains / to turn a dark grey, yet this is not activating.

.
.
Try pasting this into the Sheet level module :

Option Explicit

Private Sub Worksheet_SelectionChange(ByVal Target As Range)
Dim MR, Cell As Range

Set MR = Range("G6:BF24")
    For Each Cell In MR
        If Cell.Value = "/" Then
            Cell.Interior.ColorIndex = 15
        Else
            Cell.Interior.ColorIndex = 0
        End If
    Next
End Sub

That will do away with the conditional formatting but still give you the result you are seeking no matter what changes
are made to the range G6:BF24

Thank you for the reply.

You are welcome