Replacing only the digitizer's flex cable?

When trying to separate the glass from the LCD and digitizer, I accidently cut the digitizer's flex cable. It's this tiny piece: digitizer's flex cable

Since I still have a flawless LCD and digitizer as well as an old flex cable (a working one I have left from another faulty S4 in my desk), I should dispose of all the parts I need to build a fully working LCD assembly. However, I have no idea how or wether it's possible to attach a digitizer's flex cable back to the digitizer... Does anyone have experience with it? Do I have to solder it? Any help or suggestions are appreciated.

By the way I tried to google it, but I couldn't find anything.

Thanks