System data storage showing not existing data. HELP!

[MarkoOs89]

Hello
I downloaded some movies to my phone and then transferred them to my external HD. Now the memory in my phonr is showing like there is some data which is the same amount of data as the movies are even though I transferred them and they are not on the phone. I used an called DiskUsage and its showing 200gb in system data. I cannot access or delete this. I don't want to factory reset my phone, so please can someone help me on how to clear this data?

 

[belodion]

You’ve tried rebooting and cache clearing?

Also, downloaded from where?

 

[MarkoOs89]

So after messing around with it the whole day I finally figured it out. There is something called File Guardian which is a part of Galaxy Labs on Samsung phones. Now the thing is I know exactly where all my files are stored on my phone since I like to keep it tidy but since I moved all the downloaded movies to external HD these files were nowhere to be found. Going into storage analyser was showing 283gb in "other storage". This app File Guardian serves as a possibility to restore moved/deleted files but even when I went to search for apps which might be taking much space as I thought there could be some temp/cache data left over from the transfer I could find nothing. Then I remembered to check this File Guardian and there was 512 files there. As I said you cannot find these anywhere except in this app. I deleted it from there permanently and voila the memory is OK now. What's really strange is that I looked all over internet and couldn't find solution to this problem, I was already getting afraid I would have to factory reset my phone. It might be really useful for some people to know about this though.