This is an age old issue I believe with the incomplete files. The incomplete file that's actually downlding will disappear once the file is 100% downlded. Or should I say it gets moved to the downld folder by LW as soon as it reached 100% & is verified as being the same as the original hash tree downlded.

No LW doesn't tell you. If you have downlded the file & you know it's 100% downlded & is ok. Then you can check to see if there's any duplicate incompletes. I found this was more-so a problem with LW 4.0 thru to about 4.6 I don't notice it so often now.