Duplicate data files after uploading only one file within a project...

[killermime]

I now mysteriously have duplicates of all of my data files within my project. I cannot delete them as the warning comes up that they are referenced by another data file. How do I fix this? In short I exported one data file to my desktop and wanted to re-import it to rework a design. I only uploaded the one file and now I have 2 of each data file and after weeks of organizing everything this is unacceptable.. Any thoughts? Thanks !

[killermime]

I understand that it happened as I brought in an assembly data file with all the different components thus making duplicates. My question should have been is there anyone to back out of this easily? 

[nimo1314]

I had the same issue, so I just created another folder and moved all the duplicates there.