Maybe you can write a script that also verifies if files were copied to the source folders?
Code:

Break On
Dim $arrPlaces[], $strPlace, $strFilename
$arrPlaces = "London", "Paris"
While @ERROR = 0
	For Each $strPlace in $arrPlaces
		$strFilename = Dir("e:\dropin\" + $strPlace)
		While $strFilename <> "" AND @ERROR = 0
			If $strFilename <> "." AND $strFilename <> ".."
				If Exist("\\" + $strPlace + "\Rest\Of\ThePath" + "\" + $strFilename)
					Del "\\" + $strPlace + "\Rest\Of\ThePath" + "\" + $strFilename
				EndIf
				Move "e:\dropin\" + $strPlace + "\" + $strFilename "\\" + $strPlace + "\Rest\Of\ThePath"
			EndIf
			$strFilename = Dir()
		Loop
	Next
	Sleep 60
Loop