Suddenly almost all footage is offline or WRONG CLIPS altogether. Please Help!

[Foschissel]

Hey, can anyone help me with this?  My project was FINISHED, I was just going through to make sure I had the final touches before uploading it to YouTube.  Suddenly all my footage within the video is wrong--either offline (and unable to locate even though I am clicking the folder where all my footage should be) OR, more frustratingly, the wrong clips altogether--from a completely different day of shooting!

Here's what I think happened:

I mistakenly decided to move my folder with all my footage in it to another spot on my hard drive. In Premiere Pro, I immediately saw the notification that my footage went offline and needed to be located.  I put the folder back where it was originally and went to locate the footage in the project, but it says "no file found" on most of my clips!  I think when I moved the folder, maybe footage from a different shoot with the same name was in that spot, and Premiere Pro automatically chose the wrong one to keep?

Some of the nested sequences are mostly correct while including footage from the wrong shoot, but in the Project even the correct footage is not timed right anymore.

I'd greatly appreciate any prompt help you can offer on this, as my video is supposed to go live in a couple days.  Thanks!

[Sami Succar]

Move the folder back to its original location.

Locate your project's autosave and open an older version of the project. It will save you hours trying to relink all your media correctly.

[Joëlle Bh]

If you don't have the autosave feature or you don't have to closest saved version of your project you should try this:
let your footage go offline again and relink them to the right footage (means delete or move the footage linked to your sequence now ..the one that you dont want and move the videos that you want to this location again and relink one file to the offline sequence so the rest will relink immediately to the right footage)

[Sami Succar]

It seems the OP has many files with the same names, that's why they automatically relinked to the wrong files.

[Foschissel · Accepted solution]

UPDATE: ISSUE RESOLVED. 

I was happily surprised to connect with an Adobe agent on a Sunday evening via chat who was able to help me out by taking control of my computer and seeing what was going on with my computer (it took hours of re-linking the footage manually -- I had attempted to relink the files before reaching out for help, but it didn't work because some file names were duplicated with different footage, so it was pulling footage from the wrong day of shooting).

FOR ANYBODY ELSE HAVING THIS PROBLEM:  DO NOT RESTART YOUR COMPUTER.  Don't copy and paste your folder back to where it was, use the "undo" function instead or the locations code will get messed up.  If you restarted your computer already, I reccommend contacting an agent who can help right away. 

With the agent's help, we followed the location folder code exactly and realized it wasn't where it should be and the code was messed up, so we had to manually go in one by one to each file that was corrupt in the project.  It was a painstaking task that probably could have been avoided very easily by 1) not moving the folder to a different location until after the project was completely finished and uploaded to final destination; 2) not pressing "undo" function right away after recognizing this mistake, but rather trying to fix it by copying & pasting back to original location; and 3) not restarting my computer.

Thank you all for your replies! 

[cm bates]

One thing for future. Go to file>project manager  and consider collecting and copying to new location. I recently discovered this and it has made life easier. It stores all assets and project in one location. The copied file can also be sent to someone as a complete folder  no more " media off line"